137522420 has 48 divisors (see below), whose sum is σ = 336806400. Its totient is φ = 47148192.

The previous prime is 137522419. The next prime is 137522431. The reversal of 137522420 is 24225731.

It is a self number, because there is not a number n which added to its sum of digits gives 137522420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3164 + ... + 16883.

It is an arithmetic number, because the mean of its divisors is an integer number (7016800).

Almost surely, 2^137522420 is an apocalyptic number.

137522420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137522420 is an abundant number, since it is smaller than the sum of its proper divisors (199283980).

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

137522420 is a wasteful number, since it uses less digits than its factorization.

137522420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20077 (or 20061 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 137522420 is about 11726.9953526042. The cubic root of 137522420 is about 516.1681091978.

The spelling of 137522420 in words is "one hundred thirty-seven million, five hundred twenty-two thousand, four hundred twenty".