420430721122 has 8 divisors (see below), whose sum is σ = 630765969372. Its totient is φ = 210175398000.

The previous prime is 420430721099. The next prime is 420430721149. The reversal of 420430721122 is 221127034024.

It can be written as a sum of positive squares in 2 ways, for example, as 410969462761 + 9461258361 = 641069^2 + 97269^2 .

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, 19968129 + ... + 19989172.

Almost surely, 2^420430721122 is an apocalyptic number.

420430721122 is a deficient number, since it is larger than the sum of its proper divisors (210335248250).

420430721122 is a wasteful number, since it uses less digits than its factorization.

420430721122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39962564.

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 420430721122 its reverse (221127034024), we get a palindrome (641557755146).

The spelling of 420430721122 in words is "four hundred twenty billion, four hundred thirty million, seven hundred twenty-one thousand, one hundred twenty-two".