421633252342 has 16 divisors (see below), whose sum is σ = 650656096272. Its totient is φ = 204792023680.

The previous prime is 421633252319. The next prime is 421633252373. The reversal of 421633252342 is 243252336124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11014948 + ... + 11053159.

It is an arithmetic number, because the mean of its divisors is an integer number (40666006017).

Almost surely, 2^421633252342 is an apocalyptic number.

421633252342 is a deficient number, since it is larger than the sum of its proper divisors (229022843930).

421633252342 is a wasteful number, since it uses less digits than its factorization.

421633252342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22068383.

The product of its digits is 207360, while the sum is 37.

Adding to 421633252342 its reverse (243252336124), we get a palindrome (664885588466).

The spelling of 421633252342 in words is "four hundred twenty-one billion, six hundred thirty-three million, two hundred fifty-two thousand, three hundred forty-two".