2402001261 has 48 divisors (see below), whose sum is σ = 4091979840. Its totient is φ = 1341826560.

The previous prime is 2402001193. The next prime is 2402001269. The reversal of 2402001261 is 1621002042.

2402001261 is a `hidden beast` number, since 2 + 402 + 0 + 0 + 1 + 261 = 666.

It is not a de Polignac number, because 2402001261 - 2⁹ = 2402000749 is a prime.

It is a super-2 number, since 2×2402001261² = 11539220115691180242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2402001269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52341 + ... + 86853.

It is an arithmetic number, because the mean of its divisors is an integer number (85249580).

Almost surely, 2^2402001261 is an apocalyptic number.

It is an amenable number.

2402001261 is a deficient number, since it is larger than the sum of its proper divisors (1689978579).

2402001261 is a wasteful number, since it uses less digits than its factorization.

2402001261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34586 (or 34583 counting only the distinct ones).

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

The square root of 2402001261 is about 49010.2158840379. The cubic root of 2402001261 is about 1339.2379384563.

The spelling of 2402001261 in words is "two billion, four hundred two million, one thousand, two hundred sixty-one".