402061 has 4 divisors (see below), whose sum is σ = 438624. Its totient is φ = 365500.

The previous prime is 402053. The next prime is 402071. The reversal of 402061 is 160204.

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 402061 - 2³ = 402053 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 (402071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18265 + ... + 18286.

It is an arithmetic number, because the mean of its divisors is an integer number (109656).

2⁴⁰²⁰⁶¹ is an apocalyptic number.

It is an amenable number.

402061 is a deficient number, since it is larger than the sum of its proper divisors (36563).

402061 is a wasteful number, since it uses less digits than its factorization.

402061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36562.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 402061 is about 634.0828021639. The cubic root of 402061 is about 73.8069597312.

Adding to 402061 its reverse (160204), we get a palindrome (562265).

The spelling of 402061 in words is "four hundred two thousand, sixty-one".