1400680642 has 8 divisors (see below), whose sum is σ = 2101567500. Its totient is φ = 700158144.

The previous prime is 1400680639. The next prime is 1400680649. The reversal of 1400680642 is 2460860041.

It can be written as a sum of positive squares in 2 ways, for example, as 1389127441 + 11553201 = 37271^2 + 3399^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1400680649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81267 + ... + 96982.

Almost surely, 2^1400680642 is an apocalyptic number.

1400680642 is a deficient number, since it is larger than the sum of its proper divisors (700886858).

1400680642 is a wasteful number, since it uses less digits than its factorization.

1400680642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182180.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 1400680642 is about 37425.6682238273. The cubic root of 1400680642 is about 1118.8702047760.

The spelling of 1400680642 in words is "one billion, four hundred million, six hundred eighty thousand, six hundred forty-two".