402420041 has 4 divisors (see below), whose sum is σ = 402690000. Its totient is φ = 402150084.

The previous prime is 402420013. The next prime is 402420059. The reversal of 402420041 is 140024204.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402420041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402420071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132731 + ... + 135728.

It is an arithmetic number, because the mean of its divisors is an integer number (100672500).

Almost surely, 2^402420041 is an apocalyptic number.

It is an amenable number.

402420041 is a deficient number, since it is larger than the sum of its proper divisors (269959).

402420041 is a wasteful number, since it uses less digits than its factorization.

402420041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269958.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 402420041 is about 20060.4097914275. The cubic root of 402420041 is about 738.2892309867.

Adding to 402420041 its reverse (140024204), we get a palindrome (542444245).

The spelling of 402420041 in words is "four hundred two million, four hundred twenty thousand, forty-one".