42562642 has 4 divisors (see below), whose sum is σ = 63843966. Its totient is φ = 21281320.

The previous prime is 42562609. The next prime is 42562651. The reversal of 42562642 is 24626524.

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

It can be written as a sum of positive squares in only one way, i.e., 40947201 + 1615441 = 6399^2 + 1271^2 .

It is a super-3 number, since 3×42562642³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10640659 + ... + 10640662.

Almost surely, 2^42562642 is an apocalyptic number.

42562642 is a deficient number, since it is larger than the sum of its proper divisors (21281324).

42562642 is a wasteful number, since it uses less digits than its factorization.

42562642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21281323.

The product of its digits is 23040, while the sum is 31.

The square root of 42562642 is about 6524.0050582445. The cubic root of 42562642 is about 349.1479738026.

The spelling of 42562642 in words is "forty-two million, five hundred sixty-two thousand, six hundred forty-two".