402421141 has 4 divisors (see below), whose sum is σ = 402462432. Its totient is φ = 402379852.

The previous prime is 402421111. The next prime is 402421153. The reversal of 402421141 is 141124204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, 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 402421141 - 2¹¹ = 402419093 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 (402421111) 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, 3006 + ... + 28528.

It is an arithmetic number, because the mean of its divisors is an integer number (100615608).

Almost surely, 2^402421141 is an apocalyptic number.

It is an amenable number.

402421141 is a deficient number, since it is larger than the sum of its proper divisors (41291).

402421141 is a wasteful number, since it uses less digits than its factorization.

402421141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41290.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 402421141 is about 20060.4372085954. The cubic root of 402421141 is about 738.2899036814.

Adding to 402421141 its reverse (141124204), we get a palindrome (543545345).

The spelling of 402421141 in words is "four hundred two million, four hundred twenty-one thousand, one hundred forty-one".