15421405342 has 24 divisors (see below), whose sum is σ = 27836672760. Its totient is φ = 6381270000.

The previous prime is 15421405291. The next prime is 15421405357. The reversal of 15421405342 is 24350412451.

It is a super-2 number, since 2×15421405342² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2710284 + ... + 2715967.

It is an arithmetic number, because the mean of its divisors is an integer number (1159861365).

Almost surely, 2^15421405342 is an apocalyptic number.

15421405342 is a deficient number, since it is larger than the sum of its proper divisors (12415267418).

15421405342 is a wasteful number, since it uses less digits than its factorization.

15421405342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5426296 (or 5426289 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 15421405342 its reverse (24350412451), we get a palindrome (39771817793).

The spelling of 15421405342 in words is "fifteen billion, four hundred twenty-one million, four hundred five thousand, three hundred forty-two".