1401370642 has 16 divisors (see below), whose sum is σ = 2407176000. Its totient is φ = 599380848.

The previous prime is 1401370627. The next prime is 1401370643. The reversal of 1401370642 is 2460731041.

It is a self number, because there is not a number n which added to its sum of digits gives 1401370642.

It is not an unprimeable number, because it can be changed into a prime (1401370643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93313 + ... + 107284.

It is an arithmetic number, because the mean of its divisors is an integer number (150448500).

Almost surely, 2^1401370642 is an apocalyptic number.

1401370642 is a deficient number, since it is larger than the sum of its proper divisors (1005805358).

1401370642 is a wasteful number, since it uses less digits than its factorization.

1401370642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201105.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 1401370642 is about 37434.8853611174. The cubic root of 1401370642 is about 1119.0538996841.

The spelling of 1401370642 in words is "one billion, four hundred one million, three hundred seventy thousand, six hundred forty-two".