1407431642 has 8 divisors (see below), whose sum is σ = 2150980596. Its totient is φ = 690438112.

The previous prime is 1407431609. The next prime is 1407431657. The reversal of 1407431642 is 2461347041.

It can be written as a sum of positive squares in 2 ways, for example, as 1406175001 + 1256641 = 37499^2 + 1121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1407431599 and 1407431608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6638723 + ... + 6638934.

Almost surely, 2^1407431642 is an apocalyptic number.

1407431642 is a deficient number, since it is larger than the sum of its proper divisors (743548954).

1407431642 is a wasteful number, since it uses less digits than its factorization.

1407431642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13277712.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1407431642 is about 37515.7519183609. The cubic root of 1407431642 is about 1120.6649012201.

Adding to 1407431642 its reverse (2461347041), we get a palindrome (3868778683).

The spelling of 1407431642 in words is "one billion, four hundred seven million, four hundred thirty-one thousand, six hundred forty-two".