123072437 has 4 divisors (see below), whose sum is σ = 123186336. Its totient is φ = 122958540.

The previous prime is 123072427. The next prime is 123072463. The reversal of 123072437 is 734270321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123072437 - 2¹⁴ = 123056053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123072427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55313 + ... + 57494.

It is an arithmetic number, because the mean of its divisors is an integer number (30796584).

Almost surely, 2^123072437 is an apocalyptic number.

It is an amenable number.

123072437 is a deficient number, since it is larger than the sum of its proper divisors (113899).

123072437 is a wasteful number, since it uses less digits than its factorization.

123072437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113898.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 123072437 is about 11093.8017379075. The cubic root of 123072437 is about 497.4165909846.

The spelling of 123072437 in words is "one hundred twenty-three million, seventy-two thousand, four hundred thirty-seven".