421424101042 has 20 divisors (see below), whose sum is σ = 737448305166. Its totient is φ = 180610326960.

The previous prime is 421424101003. The next prime is 421424101103. The reversal of 421424101042 is 240101424124.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 223077680721 + 198346420321 = 472311^2 + 445361^2 .

It is a junction number, because it is equal to n+sod(n) for n = 421424100998 and 421424101016.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 43875259 + ... + 43884862.

Almost surely, 2^421424101042 is an apocalyptic number.

421424101042 is a deficient number, since it is larger than the sum of its proper divisors (316024204124).

421424101042 is an frugal number, since it uses more digits than its factorization.

421424101042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87760151 (or 87760130 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 421424101042 its reverse (240101424124), we get a palindrome (661525525166).

The spelling of 421424101042 in words is "four hundred twenty-one billion, four hundred twenty-four million, one hundred one thousand, forty-two".