42243157 has 24 divisors (see below), whose sum is σ = 49718592. Its totient is φ = 35777280.

The previous prime is 42243143. The next prime is 42243167. The reversal of 42243157 is 75134224.

It is not a de Polignac number, because 42243157 - 2⁷ = 42243029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42243107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119493 + ... + 119845.

It is an arithmetic number, because the mean of its divisors is an integer number (2071608).

Almost surely, 2^42243157 is an apocalyptic number.

It is an amenable number.

42243157 is a deficient number, since it is larger than the sum of its proper divisors (7475435).

42243157 is a wasteful number, since it uses less digits than its factorization.

42243157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 430 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 42243157 is about 6499.4735940690. The cubic root of 42243157 is about 348.2721837873.

It can be divided in two parts, 4224 and 3157, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 42243157 in words is "forty-two million, two hundred forty-three thousand, one hundred fifty-seven".