15142340 has 24 divisors (see below), whose sum is σ = 31872960. Its totient is φ = 6042848.

The previous prime is 15142327. The next prime is 15142367. The reversal of 15142340 is 4324151.

15142340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 14351 + ... + 15369.

It is an arithmetic number, because the mean of its divisors is an integer number (1328040).

Almost surely, 2^15142340 is an apocalyptic number.

15142340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15142340 is an abundant number, since it is smaller than the sum of its proper divisors (16730620).

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

15142340 is a wasteful number, since it uses less digits than its factorization.

15142340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 15142340 is about 3891.3159727784. The cubic root of 15142340 is about 247.3988431289.

Adding to 15142340 its reverse (4324151), we get a palindrome (19466491).

The spelling of 15142340 in words is "fifteen million, one hundred forty-two thousand, three hundred forty".