97142427 has 24 divisors (see below), whose sum is σ = 145307136. Its totient is φ = 62487936.

The previous prime is 97142417. The next prime is 97142449. The reversal of 97142427 is 72424179.

97142427 is a `hidden beast` number, since 97 + 142 + 427 = 666.

It is not a de Polignac number, because 97142427 - 2¹⁸ = 96880283 is a prime.

It is a super-2 number, since 2×97142427² = 18873302246900658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 97142391 and 97142400.

It is not an unprimeable number, because it can be changed into a prime (97142417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41143 + ... + 43439.

It is an arithmetic number, because the mean of its divisors is an integer number (6054464).

Almost surely, 2^97142427 is an apocalyptic number.

97142427 is a deficient number, since it is larger than the sum of its proper divisors (48164709).

97142427 is a wasteful number, since it uses less digits than its factorization.

97142427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467 (or 2464 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 97142427 is about 9856.0857849351. The cubic root of 97142427 is about 459.6948622210.

The spelling of 97142427 in words is "ninety-seven million, one hundred forty-two thousand, four hundred twenty-seven".