137445420 has 48 divisors (see below), whose sum is σ = 439826688. Its totient is φ = 31416000.

The previous prime is 137445389. The next prime is 137445431. The reversal of 137445420 is 24544731.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 163206 + ... + 164045.

It is an arithmetic number, because the mean of its divisors is an integer number (9163056).

Almost surely, 2^137445420 is an apocalyptic number.

137445420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137445420 is an abundant number, since it is smaller than the sum of its proper divisors (302381268).

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

137445420 is a wasteful number, since it uses less digits than its factorization.

137445420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327270 (or 327268 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 137445420 is about 11723.7118695403. The cubic root of 137445420 is about 516.0717555400.

The spelling of 137445420 in words is "one hundred thirty-seven million, four hundred forty-five thousand, four hundred twenty".