402052745 has 4 divisors (see below), whose sum is σ = 482463300. Its totient is φ = 321642192.

The previous prime is 402052697. The next prime is 402052759. The reversal of 402052745 is 547250204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 179774464 + 222278281 = 13408^2 + 14909^2 .

It is a cyclic number.

It is not a de Polignac number, because 402052745 - 2²² = 397858441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40205270 + ... + 40205279.

It is an arithmetic number, because the mean of its divisors is an integer number (120615825).

Almost surely, 2^402052745 is an apocalyptic number.

It is an amenable number.

402052745 is a deficient number, since it is larger than the sum of its proper divisors (80410555).

402052745 is an equidigital number, since it uses as much as digits as its factorization.

402052745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80410554.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 402052745 is about 20051.2529533693. The cubic root of 402052745 is about 738.0645460006.

It can be divided in two parts, 4020 and 52745, that added together give a palindrome (56765).

The spelling of 402052745 in words is "four hundred two million, fifty-two thousand, seven hundred forty-five".