402513121 has 8 divisors (see below), whose sum is σ = 415476800. Its totient is φ = 389659248.

The previous prime is 402513107. The next prime is 402513151. The reversal of 402513121 is 121315204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402513121 - 2¹³ = 402504929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402513151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19971 + ... + 34696.

It is an arithmetic number, because the mean of its divisors is an integer number (51934600).

Almost surely, 2^402513121 is an apocalyptic number.

It is an amenable number.

402513121 is a deficient number, since it is larger than the sum of its proper divisors (12963679).

402513121 is a wasteful number, since it uses less digits than its factorization.

402513121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54903.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 402513121 is about 20062.7296497760. The cubic root of 402513121 is about 738.3461488478.

Adding to 402513121 its reverse (121315204), we get a palindrome (523828325).

The spelling of 402513121 in words is "four hundred two million, five hundred thirteen thousand, one hundred twenty-one".