402708241 has 12 divisors (see below), whose sum is σ = 437502492. Its totient is φ = 370508736.

The previous prime is 402708143. The next prime is 402708307. The reversal of 402708241 is 142807204.

It can be written as a sum of positive squares in 6 ways, for example, as 60606225 + 342102016 = 7785^2 + 18496^2 .

It is not a de Polignac number, because 402708241 - 2¹¹ = 402706193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402708041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49815 + ... + 57331.

It is an arithmetic number, because the mean of its divisors is an integer number (36458541).

Almost surely, 2^402708241 is an apocalyptic number.

It is an amenable number.

402708241 is a deficient number, since it is larger than the sum of its proper divisors (34794251).

402708241 is a wasteful number, since it uses less digits than its factorization.

402708241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7860 (or 7847 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 402708241 is about 20067.5918086850. The cubic root of 402708241 is about 738.4654350859.

It can be divided in two parts, 40270824 and 1, that added together give a triangular number (40270825 = T₈₉₇₄).

The spelling of 402708241 in words is "four hundred two million, seven hundred eight thousand, two hundred forty-one".