402061061 has 4 divisors (see below), whose sum is σ = 402277824. Its totient is φ = 401844300.

The previous prime is 402061039. The next prime is 402061063. The reversal of 402061061 is 160160204.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402061061 - 2¹⁴ = 402044677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402061063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105575 + ... + 109316.

It is an arithmetic number, because the mean of its divisors is an integer number (100569456).

Almost surely, 2^402061061 is an apocalyptic number.

It is an amenable number.

402061061 is a deficient number, since it is larger than the sum of its proper divisors (216763).

402061061 is a wasteful number, since it uses less digits than its factorization.

402061061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216762.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 402061061 is about 20051.4603208844. The cubic root of 402061061 is about 738.0696346384.

The spelling of 402061061 in words is "four hundred two million, sixty-one thousand, sixty-one".