42212487 has 8 divisors (see below), whose sum is σ = 58224240. Its totient is φ = 27171200.

The previous prime is 42212473. The next prime is 42212497. The reversal of 42212487 is 78421224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42212487 - 2¹⁴ = 42196103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42212497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242514 + ... + 242687.

It is an arithmetic number, because the mean of its divisors is an integer number (7278030).

Almost surely, 2^42212487 is an apocalyptic number.

42212487 is a deficient number, since it is larger than the sum of its proper divisors (16011753).

42212487 is a wasteful number, since it uses less digits than its factorization.

42212487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485233.

The product of its digits is 7168, while the sum is 30.

The square root of 42212487 is about 6497.1137438096. The cubic root of 42212487 is about 348.1878774781.

The spelling of 42212487 in words is "forty-two million, two hundred twelve thousand, four hundred eighty-seven".