126395397 has 30 divisors (see below), whose sum is σ = 191927538. Its totient is φ = 82893888.

The previous prime is 126395393. The next prime is 126395411. The reversal of 126395397 is 793593621.

126395397 is a `hidden beast` number, since 1 + 2 + 639 + 5 + 3 + 9 + 7 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 17589636 + 108805761 = 4194^2 + 10431^2 .

It is not a de Polignac number, because 126395397 - 2² = 126395393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126395393) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 641503 + ... + 641699.

Almost surely, 2^126395397 is an apocalyptic number.

It is an amenable number.

126395397 is a deficient number, since it is larger than the sum of its proper divisors (65532141).

126395397 is an frugal number, since it uses more digits than its factorization.

126395397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 289 counting only the distinct ones).

The product of its digits is 306180, while the sum is 45.

The square root of 126395397 is about 11242.5707469422. The cubic root of 126395397 is about 501.8536488133.

The spelling of 126395397 in words is "one hundred twenty-six million, three hundred ninety-five thousand, three hundred ninety-seven".