421131121142 has 16 divisors (see below), whose sum is σ = 653648054400. Its totient is φ = 203252185920.

The previous prime is 421131121127. The next prime is 421131121193. The reversal of 421131121142 is 241121131124.

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, 710342 + ... + 1160537.

It is an arithmetic number, because the mean of its divisors is an integer number (40853003400).

Almost surely, 2^421131121142 is an apocalyptic number.

421131121142 is a deficient number, since it is larger than the sum of its proper divisors (232516933258).

421131121142 is a wasteful number, since it uses less digits than its factorization.

421131121142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874791.

The product of its digits is 384, while the sum is 23.

Adding to 421131121142 its reverse (241121131124), we get a palindrome (662252252266).

The spelling of 421131121142 in words is "four hundred twenty-one billion, one hundred thirty-one million, one hundred twenty-one thousand, one hundred forty-two".