402442351 has 4 divisors (see below), whose sum is σ = 402483400. Its totient is φ = 402401304.

The previous prime is 402442319. The next prime is 402442361. The reversal of 402442351 is 153244204.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 402442351 - 2⁵ = 402442319 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 (402442361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3760 + ... + 28618.

It is an arithmetic number, because the mean of its divisors is an integer number (100620850).

Almost surely, 2^402442351 is an apocalyptic number.

402442351 is a deficient number, since it is larger than the sum of its proper divisors (41049).

402442351 is a wasteful number, since it uses less digits than its factorization.

402442351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41048.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 402442351 is about 20060.9658541158. The cubic root of 402442351 is about 738.3028742174.

Adding to 402442351 its reverse (153244204), we get a palindrome (555686555).

The spelling of 402442351 in words is "four hundred two million, four hundred forty-two thousand, three hundred fifty-one".