137906420 has 24 divisors (see below), whose sum is σ = 289850400. Its totient is φ = 55115552.

The previous prime is 137906387. The next prime is 137906471. The reversal of 137906420 is 24609731.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30251 + ... + 34509.

It is an arithmetic number, because the mean of its divisors is an integer number (12077100).

Almost surely, 2^137906420 is an apocalyptic number.

137906420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137906420 is an abundant number, since it is smaller than the sum of its proper divisors (151943980).

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

137906420 is a wasteful number, since it uses less digits than its factorization.

137906420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5887 (or 5885 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 137906420 is about 11743.3564196954. The cubic root of 137906420 is about 516.6480899784.

The spelling of 137906420 in words is "one hundred thirty-seven million, nine hundred six thousand, four hundred twenty".