15220042 has 16 divisors (see below), whose sum is σ = 23258592. Its totient is φ = 7468560.

The previous prime is 15220031. The next prime is 15220067. The reversal of 15220042 is 24002251.

15220042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 15219998 and 15220025.

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, 45817 + ... + 46147.

It is an arithmetic number, because the mean of its divisors is an integer number (1453662).

Almost surely, 2^15220042 is an apocalyptic number.

15220042 is a deficient number, since it is larger than the sum of its proper divisors (8038550).

15220042 is a wasteful number, since it uses less digits than its factorization.

15220042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 15220042 is about 3901.2872234687. The cubic root of 15220042 is about 247.8212920836.

Adding to 15220042 its reverse (24002251), we get a palindrome (39222293).

The spelling of 15220042 in words is "fifteen million, two hundred twenty thousand, forty-two".