15220142 has 16 divisors (see below), whose sum is σ = 26151552. Its totient is φ = 6507960.

The previous prime is 15220141. The next prime is 15220187. The reversal of 15220142 is 24102251.

It is a self number, because there is not a number n which added to its sum of digits gives 15220142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15220141) 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, 6917 + ... + 8847.

It is an arithmetic number, because the mean of its divisors is an integer number (1634472).

Almost surely, 2^15220142 is an apocalyptic number.

15220142 is a deficient number, since it is larger than the sum of its proper divisors (10931410).

15220142 is a wasteful number, since it uses less digits than its factorization.

15220142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503.

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

The square root of 15220142 is about 3901.3000397303. The cubic root of 15220142 is about 247.8218348346.

Adding to 15220142 its reverse (24102251), we get a palindrome (39322393).

The spelling of 15220142 in words is "fifteen million, two hundred twenty thousand, one hundred forty-two".