15402142 has 16 divisors (see below), whose sum is σ = 27048672. Its totient is φ = 6439680.

The previous prime is 15402097. The next prime is 15402143. The reversal of 15402142 is 24120451.

15402142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15402143) 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, 12843 + ... + 13990.

It is an arithmetic number, because the mean of its divisors is an integer number (1690542).

Almost surely, 2^15402142 is an apocalyptic number.

15402142 is a deficient number, since it is larger than the sum of its proper divisors (11646530).

15402142 is a wasteful number, since it uses less digits than its factorization.

15402142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26883.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 15402142 is about 3924.5562806514. The cubic root of 15402142 is about 248.8057279417.

Adding to 15402142 its reverse (24120451), we get a palindrome (39522593).

The spelling of 15402142 in words is "fifteen million, four hundred two thousand, one hundred forty-two".