1402436642 has 16 divisors (see below), whose sum is σ = 2112878520. Its totient is φ = 698151168.

The previous prime is 1402436639. The next prime is 1402436663. The reversal of 1402436642 is 2466342041.

It can be written as a sum of positive squares in 4 ways, for example, as 1400331241 + 2105401 = 37421^2 + 1451^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1402436599 and 1402436608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536234 + ... + 538842.

Almost surely, 2^1402436642 is an apocalyptic number.

1402436642 is a deficient number, since it is larger than the sum of its proper divisors (710441878).

1402436642 is a wasteful number, since it uses less digits than its factorization.

1402436642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 1402436642 is about 37449.1207106389. The cubic root of 1402436642 is about 1119.3375765057.

Adding to 1402436642 its reverse (2466342041), we get a palindrome (3868778683).

The spelling of 1402436642 in words is "one billion, four hundred two million, four hundred thirty-six thousand, six hundred forty-two".