1157907420 has 48 divisors (see below), whose sum is σ = 3602380320. Its totient is φ = 308775168.

The previous prime is 1157907407. The next prime is 1157907433. The reversal of 1157907420 is 247097511.

It is a happy number.

1157907420 is a `hidden beast` number, since 11 + 579 + 0 + 74 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1157907407) and next prime (1157907433).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1071597 + ... + 1072676.

It is an arithmetic number, because the mean of its divisors is an integer number (75049590).

Almost surely, 2^1157907420 is an apocalyptic number.

1157907420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157907420 is an abundant number, since it is smaller than the sum of its proper divisors (2444472900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1157907420 is a wasteful number, since it uses less digits than its factorization.

1157907420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144291 (or 2144283 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 1157907420 is about 34028.0387327862. The cubic root of 1157907420 is about 1050.0853808122.

The spelling of 1157907420 in words is "one billion, one hundred fifty-seven million, nine hundred seven thousand, four hundred twenty".