1021424392 has 16 divisors (see below), whose sum is σ = 1917498960. Its totient is φ = 510091344.

The previous prime is 1021424387. The next prime is 1021424407. The reversal of 1021424392 is 2934241201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021424392.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70578 + ... + 83809.

It is an arithmetic number, because the mean of its divisors is an integer number (119843685).

Almost surely, 2^1021424392 is an apocalyptic number.

It is an amenable number.

1021424392 is a deficient number, since it is larger than the sum of its proper divisors (896074568).

1021424392 is a wasteful number, since it uses less digits than its factorization.

1021424392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155220 (or 155216 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1021424392 is about 31959.7307873518. The cubic root of 1021424392 is about 1007.0910619862.

Adding to 1021424392 its reverse (2934241201), we get a palindrome (3955665593).

The spelling of 1021424392 in words is "one billion, twenty-one million, four hundred twenty-four thousand, three hundred ninety-two".