1401340402 has 32 divisors (see below), whose sum is σ = 2758625280. Its totient is φ = 517240080.

The previous prime is 1401340387. The next prime is 1401340429. The reversal of 1401340402 is 2040431041.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1401340402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236538 + ... + 242389.

It is an arithmetic number, because the mean of its divisors is an integer number (86207040).

Almost surely, 2^1401340402 is an apocalyptic number.

1401340402 is a deficient number, since it is larger than the sum of its proper divisors (1357284878).

1401340402 is a wasteful number, since it uses less digits than its factorization.

1401340402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478966.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1401340402 is about 37434.4814576080. The cubic root of 1401340402 is about 1119.0458503187.

Adding to 1401340402 its reverse (2040431041), we get a palindrome (3441771443).

The spelling of 1401340402 in words is "one billion, four hundred one million, three hundred forty thousand, four hundred two".