420121244402 has 8 divisors (see below), whose sum is σ = 630187602012. Its totient is φ = 210058710400.

The previous prime is 420121244393. The next prime is 420121244429. The reversal of 420121244402 is 204442121024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 397983077881 + 22138166521 = 630859^2 + 148789^2 .

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, 663299 + ... + 1131462.

Almost surely, 2^420121244402 is an apocalyptic number.

420121244402 is a deficient number, since it is larger than the sum of its proper divisors (210066357610).

420121244402 is a wasteful number, since it uses less digits than its factorization.

420121244402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911804.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 420121244402 its reverse (204442121024), we get a palindrome (624563365426).

The spelling of 420121244402 in words is "four hundred twenty billion, one hundred twenty-one million, two hundred forty-four thousand, four hundred two".