42712501 has 4 divisors (see below), whose sum is σ = 45998092. Its totient is φ = 39426912.

The previous prime is 42712499. The next prime is 42712511. The reversal of 42712501 is 10521724.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18447025 + 24265476 = 4295^2 + 4926^2 .

It is a cyclic number.

It is not a de Polignac number, because 42712501 - 2¹ = 42712499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42712511) 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, 1642776 + ... + 1642801.

It is an arithmetic number, because the mean of its divisors is an integer number (11499523).

Almost surely, 2^42712501 is an apocalyptic number.

It is an amenable number.

42712501 is a deficient number, since it is larger than the sum of its proper divisors (3285591).

42712501 is a wasteful number, since it uses less digits than its factorization.

42712501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285590.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 42712501 is about 6535.4801659863. The cubic root of 42712501 is about 349.5572660483.

The spelling of 42712501 in words is "forty-two million, seven hundred twelve thousand, five hundred one".