1402401065 has 8 divisors (see below), whose sum is σ = 1812333768. Its totient is φ = 1035619200.

The previous prime is 1402401061. The next prime is 1402401067. The reversal of 1402401065 is 5601042041.

It can be written as a sum of positive squares in 4 ways, for example, as 61669609 + 1340731456 = 7853^2 + 36616^2 .

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

It is not a de Polignac number, because 1402401065 - 2² = 1402401061 is a prime.

It is a super-2 number, since 2×1402401065² = 3933457494226268450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1402401065.

It is not an unprimeable number, because it can be changed into a prime (1402401061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10787636 + ... + 10787765.

It is an arithmetic number, because the mean of its divisors is an integer number (226541721).

Almost surely, 2^1402401065 is an apocalyptic number.

It is an amenable number.

1402401065 is a deficient number, since it is larger than the sum of its proper divisors (409932703).

1402401065 is a wasteful number, since it uses less digits than its factorization.

1402401065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21575419.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1402401065 is about 37448.6457031493. The cubic root of 1402401065 is about 1119.3281113105.

The spelling of 1402401065 in words is "one billion, four hundred two million, four hundred one thousand, sixty-five".