126960921 has 6 divisors (see below), whose sum is σ = 183388010. Its totient is φ = 84640608.

The previous prime is 126960919. The next prime is 126960923. The reversal of 126960921 is 129069621.

126960921 is a `hidden beast` number, since 1 + 26 + 9 + 609 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (126960919) and next prime (126960923).

It can be written as a sum of positive squares in only one way, i.e., 95824521 + 31136400 = 9789^2 + 5580^2 .

It is not a de Polignac number, because 126960921 - 2¹ = 126960919 is a prime.

It is a super-2 number, since 2×126960921² = 32238150922336482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126960923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7053376 + ... + 7053393.

Almost surely, 2^126960921 is an apocalyptic number.

It is an amenable number.

126960921 is a deficient number, since it is larger than the sum of its proper divisors (56427089).

126960921 is a wasteful number, since it uses less digits than its factorization.

126960921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14106775 (or 14106772 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 126960921 is about 11267.6936859324. The cubic root of 126960921 is about 502.6010073925.

The spelling of 126960921 in words is "one hundred twenty-six million, nine hundred sixty thousand, nine hundred twenty-one".