431421071242 has 12 divisors (see below), whose sum is σ = 752785746930. Its totient is φ = 184894744776.

The previous prime is 431421071231. The next prime is 431421071317. The reversal of 431421071242 is 242170124134.

It can be written as a sum of positive squares in only one way, i.e., 423682526281 + 7738544961 = 650909^2 + 87969^2 .

It is a super-2 number, since 2×431421071242² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2201127817 + ... + 2201128012.

Almost surely, 2^431421071242 is an apocalyptic number.

431421071242 is a deficient number, since it is larger than the sum of its proper divisors (321364675688).

431421071242 is a wasteful number, since it uses less digits than its factorization.

431421071242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402255845 (or 4402255838 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

Adding to 431421071242 its reverse (242170124134), we get a palindrome (673591195376).

The spelling of 431421071242 in words is "four hundred thirty-one billion, four hundred twenty-one million, seventy-one thousand, two hundred forty-two".