15429142 has 4 divisors (see below), whose sum is σ = 23143716. Its totient is φ = 7714570.

The previous prime is 15429017. The next prime is 15429143. The reversal of 15429142 is 24192451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24192451 = 47 ⋅514733.

It is a self number, because there is not a number n which added to its sum of digits gives 15429142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15429143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3857284 + ... + 3857287.

It is an arithmetic number, because the mean of its divisors is an integer number (5785929).

Almost surely, 2^15429142 is an apocalyptic number.

15429142 is a deficient number, since it is larger than the sum of its proper divisors (7714574).

15429142 is an equidigital number, since it uses as much as digits as its factorization.

15429142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7714573.

The product of its digits is 2880, while the sum is 28.

The square root of 15429142 is about 3927.9946537642. The cubic root of 15429142 is about 248.9510287935.

The spelling of 15429142 in words is "fifteen million, four hundred twenty-nine thousand, one hundred forty-two".