126142565 has 16 divisors (see below), whose sum is σ = 156625920. Its totient is φ = 97426560.

The previous prime is 126142561. The next prime is 126142573. The reversal of 126142565 is 565241621.

It is not a de Polignac number, because 126142565 - 2² = 126142561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126142561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94976 + ... + 96294.

It is an arithmetic number, because the mean of its divisors is an integer number (9789120).

Almost surely, 2^126142565 is an apocalyptic number.

It is an amenable number.

126142565 is a deficient number, since it is larger than the sum of its proper divisors (30483355).

126142565 is a wasteful number, since it uses less digits than its factorization.

126142565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972.

The product of its digits is 14400, while the sum is 32.

The square root of 126142565 is about 11231.3207148581. The cubic root of 126142565 is about 501.5188018108.

The spelling of 126142565 in words is "one hundred twenty-six million, one hundred forty-two thousand, five hundred sixty-five".