402442413 has 8 divisors (see below), whose sum is σ = 544147776. Its totient is φ = 264516000.

The previous prime is 402442393. The next prime is 402442421. The reversal of 402442413 is 314244204.

It is a happy number.

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

It is not a de Polignac number, because 402442413 - 2¹² = 402438317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402442423) 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, 944488 + ... + 944913.

It is an arithmetic number, because the mean of its divisors is an integer number (68018472).

Almost surely, 2^402442413 is an apocalyptic number.

It is an amenable number.

402442413 is a deficient number, since it is larger than the sum of its proper divisors (141705363).

402442413 is a wasteful number, since it uses less digits than its factorization.

402442413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889475.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 402442413 is about 20060.9673994052. The cubic root of 402442413 is about 738.3029121316.

Adding to 402442413 its reverse (314244204), we get a palindrome (716686617).

The spelling of 402442413 in words is "four hundred two million, four hundred forty-two thousand, four hundred thirteen".