1402561441 has 8 divisors (see below), whose sum is σ = 1410298344. Its totient is φ = 1394839680.

The previous prime is 1402561429. The next prime is 1402561499. The reversal of 1402561441 is 1441652041.

It can be written as a sum of positive squares in 4 ways, for example, as 4100625 + 1398460816 = 2025^2 + 37396^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1402561441 - 2²³ = 1394172833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402561411) 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, 216055 + ... + 222451.

It is an arithmetic number, because the mean of its divisors is an integer number (176287293).

Almost surely, 2^1402561441 is an apocalyptic number.

It is an amenable number.

1402561441 is a deficient number, since it is larger than the sum of its proper divisors (7736903).

1402561441 is an equidigital number, since it uses as much as digits as its factorization.

1402561441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7571.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1402561441 is about 37450.7869209714. The cubic root of 1402561441 is about 1119.3707777838.

It can be divided in two parts, 14025 and 61441, that added together give a triangular number (75466 = T₃₈₈).

The spelling of 1402561441 in words is "one billion, four hundred two million, five hundred sixty-one thousand, four hundred forty-one".