402221341 has 4 divisors (see below), whose sum is σ = 402266272. Its totient is φ = 402176412.

The previous prime is 402221333. The next prime is 402221359. The reversal of 402221341 is 143122204.

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 402221341 - 2³ = 402221333 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 (402221321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3951 + ... + 28636.

It is an arithmetic number, because the mean of its divisors is an integer number (100566568).

Almost surely, 2^402221341 is an apocalyptic number.

It is an amenable number.

402221341 is a deficient number, since it is larger than the sum of its proper divisors (44931).

402221341 is a wasteful number, since it uses less digits than its factorization.

402221341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44930.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 402221341 is about 20055.4566390297. The cubic root of 402221341 is about 738.1676977573.

Adding to 402221341 its reverse (143122204), we get a palindrome (545343545).

The spelling of 402221341 in words is "four hundred two million, two hundred twenty-one thousand, three hundred forty-one".