137400433 has 8 divisors (see below), whose sum is σ = 140266728. Its totient is φ = 134544384.

The previous prime is 137400391. The next prime is 137400449. The reversal of 137400433 is 334004731.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 121264144 + 16136289 = 11012^2 + 4017^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137400433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137400398 and 137400407.

It is not an unprimeable number, because it can be changed into a prime (137400493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28335 + ... + 32827.

It is an arithmetic number, because the mean of its divisors is an integer number (17533341).

Almost surely, 2^137400433 is an apocalyptic number.

It is an amenable number.

137400433 is a deficient number, since it is larger than the sum of its proper divisors (2866295).

137400433 is an equidigital number, since it uses as much as digits as its factorization.

137400433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5123.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 137400433 is about 11721.7930795591. The cubic root of 137400433 is about 516.0154445731.

The spelling of 137400433 in words is "one hundred thirty-seven million, four hundred thousand, four hundred thirty-three".