420413042402 has 8 divisors (see below), whose sum is σ = 632426497500. Its totient is φ = 209604209904.

The previous prime is 420413042381. The next prime is 420413042419. The reversal of 420413042402 is 204240314024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 373627785001 + 46785257401 = 611251^2 + 216299^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301154777 + ... + 301156172.

Almost surely, 2^420413042402 is an apocalyptic number.

420413042402 is a deficient number, since it is larger than the sum of its proper divisors (212013455098).

420413042402 is a wasteful number, since it uses less digits than its factorization.

420413042402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602311300.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 420413042402 its reverse (204240314024), we get a palindrome (624653356426).

The spelling of 420413042402 in words is "four hundred twenty billion, four hundred thirteen million, forty-two thousand, four hundred two".