9142457 has 4 divisors (see below), whose sum is σ = 9271296. Its totient is φ = 9013620.

The previous prime is 9142429. The next prime is 9142499. The reversal of 9142457 is 7542419.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-9142457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9145457) 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, 64313 + ... + 64454.

It is an arithmetic number, because the mean of its divisors is an integer number (2317824).

Almost surely, 2^9142457 is an apocalyptic number.

It is an amenable number.

9142457 is a deficient number, since it is larger than the sum of its proper divisors (128839).

9142457 is a wasteful number, since it uses less digits than its factorization.

9142457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128838.

The product of its digits is 10080, while the sum is 32.

The square root of 9142457 is about 3023.6496159443. The cubic root of 9142457 is about 209.1001328749.

The spelling of 9142457 in words is "nine million, one hundred forty-two thousand, four hundred fifty-seven".