42252279 has 4 divisors (see below), whose sum is σ = 56336376. Its totient is φ = 28168184.

The previous prime is 42252269. The next prime is 42252283. The reversal of 42252279 is 97225224.

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

It is a cyclic number.

It is not a de Polignac number, because 42252279 - 2⁷ = 42252151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42252269) 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, 7042044 + ... + 7042049.

It is an arithmetic number, because the mean of its divisors is an integer number (14084094).

Almost surely, 2^42252279 is an apocalyptic number.

42252279 is a deficient number, since it is larger than the sum of its proper divisors (14084097).

42252279 is a wasteful number, since it uses less digits than its factorization.

42252279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14084096.

The product of its digits is 20160, while the sum is 33.

The square root of 42252279 is about 6500.1753053283. The cubic root of 42252279 is about 348.2972506497.

The spelling of 42252279 in words is "forty-two million, two hundred fifty-two thousand, two hundred seventy-nine".