212167440042 has 16 divisors (see below), whose sum is σ = 429706208640. Its totient is φ = 69827258592.

The previous prime is 212167440041. The next prime is 212167440047. The reversal of 212167440042 is 240044761212.

It is a super-2 number, since 2×212167440042² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212167439985 and 212167440012.

It is not an unprimeable number, because it can be changed into a prime (212167440041) 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, 223804843 + ... + 223805790.

It is an arithmetic number, because the mean of its divisors is an integer number (26856638040).

Almost surely, 2^212167440042 is an apocalyptic number.

212167440042 is an abundant number, since it is smaller than the sum of its proper divisors (217538768598).

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

212167440042 is a wasteful number, since it uses less digits than its factorization.

212167440042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447610717.

The product of its (nonzero) digits is 21504, while the sum is 33.

The spelling of 212167440042 in words is "two hundred twelve billion, one hundred sixty-seven million, four hundred forty thousand, forty-two".