15042040 has 32 divisors (see below), whose sum is σ = 36449280. Its totient is φ = 5553792.

The previous prime is 15042029. The next prime is 15042043. The reversal of 15042040 is 4024051.

15042040 = T₄₈₅ + T₄₈₆ + ... + T₅₈₈.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15042043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13944 + ... + 14983.

It is an arithmetic number, because the mean of its divisors is an integer number (1139040).

Almost surely, 2^15042040 is an apocalyptic number.

15042040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15042040 is an abundant number, since it is smaller than the sum of its proper divisors (21407240).

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

15042040 is a wasteful number, since it uses less digits than its factorization.

15042040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28951 (or 28947 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 15042040 is about 3878.4068894328. The cubic root of 15042040 is about 246.8513915361.

Adding to 15042040 its reverse (4024051), we get a palindrome (19066091).

The spelling of 15042040 in words is "fifteen million, forty-two thousand, forty".