212431002042 has 64 divisors (see below), whose sum is σ = 495261112320. Its totient is φ = 59484020544.

The previous prime is 212431002041. The next prime is 212431002079. The reversal of 212431002042 is 240200134212.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (212431002041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1993773 + ... + 2097615.

It is an arithmetic number, because the mean of its divisors is an integer number (7738454880).

Almost surely, 2^212431002042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212431002042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247630556160).

212431002042 is an abundant number, since it is smaller than the sum of its proper divisors (282830110278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212431002042 is a wasteful number, since it uses less digits than its factorization.

212431002042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104827.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 212431002042 its reverse (240200134212), we get a palindrome (452631136254).

The spelling of 212431002042 in words is "two hundred twelve billion, four hundred thirty-one million, two thousand, forty-two".