15435042240 has 56 divisors (see below), whose sum is σ = 49006262160. Its totient is φ = 4116011008.

The previous prime is 15435042223. The next prime is 15435042251. The reversal of 15435042240 is 4224053451.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 15435042198 and 15435042207.

It is a congruent number.

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, 8038125 + ... + 8040044.

Almost surely, 2^15435042240 is an apocalyptic number.

15435042240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15435042240 is an abundant number, since it is smaller than the sum of its proper divisors (33571219920).

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

15435042240 is a wasteful number, since it uses less digits than its factorization.

15435042240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16078189 (or 16078179 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 15435042240 its reverse (4224053451), we get a palindrome (19659095691).

The spelling of 15435042240 in words is "fifteen billion, four hundred thirty-five million, forty-two thousand, two hundred forty".