137994128 has 10 divisors (see below), whose sum is σ = 267363654. Its totient is φ = 68997056.

The previous prime is 137994091. The next prime is 137994137. The reversal of 137994128 is 821499731.

It can be written as a sum of positive squares in only one way, i.e., 133448704 + 4545424 = 11552^2 + 2132^2 .

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 as a sum of consecutive naturals, namely, 4312301 + ... + 4312332.

Almost surely, 2^137994128 is an apocalyptic number.

It is an amenable number.

137994128 is a deficient number, since it is larger than the sum of its proper divisors (129369526).

137994128 is an equidigital number, since it uses as much as digits as its factorization.

137994128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8624641 (or 8624635 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 137994128 is about 11747.0901928946. The cubic root of 137994128 is about 516.7575955584.

The spelling of 137994128 in words is "one hundred thirty-seven million, nine hundred ninety-four thousand, one hundred twenty-eight".