1200420012431 has 4 divisors (see below), whose sum is σ = 1206452274000. Its totient is φ = 1194387750864.

The previous prime is 1200420012413. The next prime is 1200420012439. The reversal of 1200420012431 is 1342100240021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200420012431 - 2¹⁴ = 1200419996047 is a prime.

It is a super-2 number, since 2×1200420012431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200420012439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3016130486 + ... + 3016130883.

It is an arithmetic number, because the mean of its divisors is an integer number (301613068500).

Almost surely, 2^{1200420012431} is an apocalyptic number.

1200420012431 is a deficient number, since it is larger than the sum of its proper divisors (6032261569).

1200420012431 is an equidigital number, since it uses as much as digits as its factorization.

1200420012431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6032261568.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1200420012431 its reverse (1342100240021), we get a palindrome (2542520252452).

The spelling of 1200420012431 in words is "one trillion, two hundred billion, four hundred twenty million, twelve thousand, four hundred thirty-one".