402106253 has 8 divisors (see below), whose sum is σ = 448168320. Its totient is φ = 358534080.

The previous prime is 402106249. The next prime is 402106259. The reversal of 402106253 is 352601204.

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

It is not a de Polignac number, because 402106253 - 2² = 402106249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402106259) 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, 622133 + ... + 622778.

It is an arithmetic number, because the mean of its divisors is an integer number (56021040).

Almost surely, 2^402106253 is an apocalyptic number.

It is an amenable number.

402106253 is a deficient number, since it is larger than the sum of its proper divisors (46062067).

402106253 is a wasteful number, since it uses less digits than its factorization.

402106253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244947.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 402106253 is about 20052.5871896870. The cubic root of 402106253 is about 738.0972868174.

Adding to 402106253 its reverse (352601204), we get a palindrome (754707457).

The spelling of 402106253 in words is "four hundred two million, one hundred six thousand, two hundred fifty-three".