4001243157 has 8 divisors (see below), whose sum is σ = 5927767680. Its totient is φ = 2667495420.

The previous prime is 4001243153. The next prime is 4001243161. The reversal of 4001243157 is 7513421004.

4001243157 is a `hidden beast` number, since 400 + 1 + 243 + 15 + 7 = 666.

4001243157 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4001243153) and next prime (4001243161).

It is not a de Polignac number, because 4001243157 - 2² = 4001243153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 148194191 = 4001243157 / (4 + 0 + 0 + 1 + 2 + 4 + 3 + 1 + 5 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 4001243157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001243153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74097069 + ... + 74097122.

It is an arithmetic number, because the mean of its divisors is an integer number (740970960).

Almost surely, 2^4001243157 is an apocalyptic number.

It is an amenable number.

4001243157 is a deficient number, since it is larger than the sum of its proper divisors (1926524523).

4001243157 is a wasteful number, since it uses less digits than its factorization.

4001243157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148194200 (or 148194194 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 4001243157 is about 63255.3804588985. The cubic root of 4001243157 is about 1587.5654839956.

The spelling of 4001243157 in words is "four billion, one million, two hundred forty-three thousand, one hundred fifty-seven".