1392432242 has 16 divisors (see below), whose sum is σ = 2145030552. Its totient is φ = 677508480.

The previous prime is 1392432241. The next prime is 1392432263. The reversal of 1392432242 is 2422342931.

It can be written as a sum of positive squares in 4 ways, for example, as 639533521 + 752898721 = 25289^2 + 27439^2 .

It is a super-2 number, since 2×1392432242² = 3877735097122293128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1392432199 and 1392432208.

It is not an unprimeable number, because it can be changed into a prime (1392432241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11168 + ... + 53940.

Almost surely, 2^1392432242 is an apocalyptic number.

1392432242 is a deficient number, since it is larger than the sum of its proper divisors (752598310).

1392432242 is a wasteful number, since it uses less digits than its factorization.

1392432242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43213.

The product of its digits is 20736, while the sum is 32.

The square root of 1392432242 is about 37315.3084135720. The cubic root of 1392432242 is about 1116.6695926658.

The spelling of 1392432242 in words is "one billion, three hundred ninety-two million, four hundred thirty-two thousand, two hundred forty-two".