158122540 has 12 divisors (see below), whose sum is σ = 332057376. Its totient is φ = 63249008.

The previous prime is 158122511. The next prime is 158122543. The reversal of 158122540 is 45221851.

It is a junction number, because it is equal to n+sod(n) for n = 158122499 and 158122508.

It is not an unprimeable number, because it can be changed into a prime (158122543) 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, 3953044 + ... + 3953083.

It is an arithmetic number, because the mean of its divisors is an integer number (27671448).

Almost surely, 2^158122540 is an apocalyptic number.

158122540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158122540 is an abundant number, since it is smaller than the sum of its proper divisors (173934836).

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

158122540 is a wasteful number, since it uses less digits than its factorization.

158122540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7906136 (or 7906134 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 158122540 is about 12574.6785247178. The cubic root of 158122540 is about 540.7517422116.

The spelling of 158122540 in words is "one hundred fifty-eight million, one hundred twenty-two thousand, five hundred forty".