1407856042 has 4 divisors (see below), whose sum is σ = 2111784066. Its totient is φ = 703928020.

The previous prime is 1407856007. The next prime is 1407856061. The reversal of 1407856042 is 2406587041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1175872681 + 231983361 = 34291^2 + 15231^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1407855992 and 1407856010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 351964009 + ... + 351964012.

Almost surely, 2^1407856042 is an apocalyptic number.

1407856042 is a deficient number, since it is larger than the sum of its proper divisors (703928024).

1407856042 is an equidigital number, since it uses as much as digits as its factorization.

1407856042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703928023.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 1407856042 is about 37521.4077827578. The cubic root of 1407856042 is about 1120.7775324775. Note that the first 3 decimals are identical.

The spelling of 1407856042 in words is "one billion, four hundred seven million, eight hundred fifty-six thousand, forty-two".