402121413241 has 4 divisors (see below), whose sum is σ = 415987668900. Its totient is φ = 388255157584.

The previous prime is 402121413223. The next prime is 402121413257. The reversal of 402121413241 is 142314121204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 328439025216 + 73682388025 = 573096^2 + 271445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402121413241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402121413041) 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, 6933127786 + ... + 6933127843.

It is an arithmetic number, because the mean of its divisors is an integer number (103996917225).

Almost surely, 2^402121413241 is an apocalyptic number.

It is an amenable number.

402121413241 is a deficient number, since it is larger than the sum of its proper divisors (13866255659).

402121413241 is a wasteful number, since it uses less digits than its factorization.

402121413241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13866255658.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 402121413241 its reverse (142314121204), we get a palindrome (544435534445).

The spelling of 402121413241 in words is "four hundred two billion, one hundred twenty-one million, four hundred thirteen thousand, two hundred forty-one".