15420122 has 16 divisors (see below), whose sum is σ = 24909120. Its totient is φ = 7132608.

The previous prime is 15420107. The next prime is 15420131. The reversal of 15420122 is 22102451.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 15420122.

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, 1838 + ... + 5849.

It is an arithmetic number, because the mean of its divisors is an integer number (1556820).

Almost surely, 2^15420122 is an apocalyptic number.

15420122 is a deficient number, since it is larger than the sum of its proper divisors (9488998).

15420122 is a wasteful number, since it uses less digits than its factorization.

15420122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7765.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 15420122 is about 3926.8463173391. The cubic root of 15420122 is about 248.9025064149.

Adding to 15420122 its reverse (22102451), we get a palindrome (37522573).

The spelling of 15420122 in words is "fifteen million, four hundred twenty thousand, one hundred twenty-two".