402201261 has 96 divisors (see below), whose sum is σ = 783043200. Its totient is φ = 201519360.

The previous prime is 402201251. The next prime is 402201263. The reversal of 402201261 is 162102204.

402201261 is a `hidden beast` number, since 402 + 2 + 0 + 1 + 261 = 666.

It is not a de Polignac number, because 402201261 - 2⁶ = 402201197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402201263) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 421561 + ... + 422513.

It is an arithmetic number, because the mean of its divisors is an integer number (8156700).

Almost surely, 2^402201261 is an apocalyptic number.

It is an amenable number.

402201261 is a deficient number, since it is larger than the sum of its proper divisors (380841939).

402201261 is a wasteful number, since it uses less digits than its factorization.

402201261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016 (or 1003 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 402201261 is about 20054.9560208942. The cubic root of 402201261 is about 738.1554137630.

Adding to 402201261 its reverse (162102204), we get a palindrome (564303465).

The spelling of 402201261 in words is "four hundred two million, two hundred one thousand, two hundred sixty-one".