15154042420 has 144 divisors (see below), whose sum is σ = 38988492480. Its totient is φ = 4913187840.

The previous prime is 15154042357. The next prime is 15154042427. The reversal of 15154042420 is 2424045151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15154042427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 771967 + ... + 791353.

It is an arithmetic number, because the mean of its divisors is an integer number (270753420).

Almost surely, 2^15154042420 is an apocalyptic number.

15154042420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15154042420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19494246240).

15154042420 is an abundant number, since it is smaller than the sum of its proper divisors (23834450060).

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

15154042420 is a wasteful number, since it uses less digits than its factorization.

15154042420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19454 (or 19441 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 15154042420 its reverse (2424045151), we get a palindrome (17578087571).

It can be divided in two parts, 1515404 and 2420, that added together give a square (1517824 = 1232²).

The spelling of 15154042420 in words is "fifteen billion, one hundred fifty-four million, forty-two thousand, four hundred twenty".