1242046543431 has 8 divisors (see below), whose sum is σ = 1656460837360. Its totient is φ = 827831639232.

The previous prime is 1242046543417. The next prime is 1242046543457. The reversal of 1242046543431 is 1343456402421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1242046543431 - 2¹⁹ = 1242046019143 is a prime.

It is a super-2 number, since 2×1242046543431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242046543431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242046542431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49832896 + ... + 49857813.

It is an arithmetic number, because the mean of its divisors is an integer number (207057604670).

Almost surely, 2^{1242046543431} is an apocalyptic number.

1242046543431 is a deficient number, since it is larger than the sum of its proper divisors (414414293929).

1242046543431 is an equidigital number, since it uses as much as digits as its factorization.

1242046543431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99694865.

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 1242046543431 in words is "one trillion, two hundred forty-two billion, forty-six million, five hundred forty-three thousand, four hundred thirty-one".