15138342 has 12 divisors (see below), whose sum is σ = 32799780. Its totient is φ = 5046108.

The previous prime is 15138329. The next prime is 15138349. The reversal of 15138342 is 24383151.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15138349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 420492 + ... + 420527.

It is an arithmetic number, because the mean of its divisors is an integer number (2733315).

Almost surely, 2^15138342 is an apocalyptic number.

15138342 is an abundant number, since it is smaller than the sum of its proper divisors (17661438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15138342 is a wasteful number, since it uses less digits than its factorization.

15138342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841027 (or 841024 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 15138342 is about 3890.8022309030. The cubic root of 15138342 is about 247.3770678146.

The spelling of 15138342 in words is "fifteen million, one hundred thirty-eight thousand, three hundred forty-two".