424168157 has 6 divisors (see below), whose sum is σ = 493420158. Its totient is φ = 363572664.

The previous prime is 424168153. The next prime is 424168177. The reversal of 424168157 is 751861424.

It can be written as a sum of positive squares in only one way, i.e., 422960356 + 1207801 = 20566^2 + 1099^2 .

It is not a de Polignac number, because 424168157 - 2² = 424168153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 424168157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424168153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4328198 + ... + 4328295.

It is an arithmetic number, because the mean of its divisors is an integer number (82236693).

Almost surely, 2^424168157 is an apocalyptic number.

It is an amenable number.

424168157 is a deficient number, since it is larger than the sum of its proper divisors (69252001).

424168157 is an equidigital number, since it uses as much as digits as its factorization.

424168157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8656507 (or 8656500 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 424168157 is about 20595.3430901260. The cubic root of 424168157 is about 751.3564530862.

The spelling of 424168157 in words is "four hundred twenty-four million, one hundred sixty-eight thousand, one hundred fifty-seven".