402148157 has 4 divisors (see below), whose sum is σ = 407238720. Its totient is φ = 397057596.

The previous prime is 402148139. The next prime is 402148171. The reversal of 402148157 is 751841204.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402148157 - 2⁶ = 402148093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402148127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2545163 + ... + 2545320.

It is an arithmetic number, because the mean of its divisors is an integer number (101809680).

Almost surely, 2^402148157 is an apocalyptic number.

It is an amenable number.

402148157 is a deficient number, since it is larger than the sum of its proper divisors (5090563).

402148157 is an equidigital number, since it uses as much as digits as its factorization.

402148157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5090562.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 402148157 is about 20053.6320151737. The cubic root of 402148157 is about 738.1229252767.

The spelling of 402148157 in words is "four hundred two million, one hundred forty-eight thousand, one hundred fifty-seven".