13937107421 has 4 divisors (see below), whose sum is σ = 13938165600. Its totient is φ = 13936049244.

The previous prime is 13937107403. The next prime is 13937107427. The reversal of 13937107421 is 12470173931.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12470173931 = 17 ⋅733539643.

It is a cyclic number.

It is not a de Polignac number, because 13937107421 - 2¹⁴ = 13937091037 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 (13937107427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509081 + ... + 535758.

It is an arithmetic number, because the mean of its divisors is an integer number (3484541400).

Almost surely, 2^13937107421 is an apocalyptic number.

It is an amenable number.

13937107421 is a deficient number, since it is larger than the sum of its proper divisors (1058179).

13937107421 is a wasteful number, since it uses less digits than its factorization.

13937107421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058178.

The product of its (nonzero) digits is 31752, while the sum is 38.

The spelling of 13937107421 in words is "thirteen billion, nine hundred thirty-seven million, one hundred seven thousand, four hundred twenty-one".