423878157 has 16 divisors (see below), whose sum is σ = 629040000. Its totient is φ = 282102912.

The previous prime is 423878149. The next prime is 423878167. The reversal of 423878157 is 751878324.

423878157 is a `hidden beast` number, since 423 + 8 + 78 + 157 = 666.

It is not a de Polignac number, because 423878157 - 2³ = 423878149 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423878167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3069 + ... + 29277.

It is an arithmetic number, because the mean of its divisors is an integer number (39315000).

Almost surely, 2^423878157 is an apocalyptic number.

It is an amenable number.

423878157 is a deficient number, since it is larger than the sum of its proper divisors (205161843).

423878157 is a wasteful number, since it uses less digits than its factorization.

423878157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26817 (or 26811 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 423878157 is about 20588.3014598096. The cubic root of 423878157 is about 751.1851821379.

The spelling of 423878157 in words is "four hundred twenty-three million, eight hundred seventy-eight thousand, one hundred fifty-seven".