42017642 has 16 divisors (see below), whose sum is σ = 69636672. Its totient is φ = 18912960.

The previous prime is 42017639. The next prime is 42017653. The reversal of 42017642 is 24671024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26084 + ... + 27647.

It is an arithmetic number, because the mean of its divisors is an integer number (4352292).

Almost surely, 2^42017642 is an apocalyptic number.

42017642 is a deficient number, since it is larger than the sum of its proper divisors (27619030).

42017642 is a wasteful number, since it uses less digits than its factorization.

42017642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53773.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 42017642 is about 6482.1016653551. The cubic root of 42017642 is about 347.6513275662.

Adding to 42017642 its reverse (24671024), we get a palindrome (66688666).

The spelling of 42017642 in words is "forty-two million, seventeen thousand, six hundred forty-two".