1622171240542 has 4 divisors (see below), whose sum is σ = 2433256860816. Its totient is φ = 811085620270.

The previous prime is 1622171240537. The next prime is 1622171240593. The reversal of 1622171240542 is 2450421712261.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405542810134 + ... + 405542810137.

It is an arithmetic number, because the mean of its divisors is an integer number (608314215204).

Almost surely, 2^{1622171240542} is an apocalyptic number.

1622171240542 is a deficient number, since it is larger than the sum of its proper divisors (811085620274).

1622171240542 is an equidigital number, since it uses as much as digits as its factorization.

1622171240542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811085620273.

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 1622171240542 in words is "one trillion, six hundred twenty-two billion, one hundred seventy-one million, two hundred forty thousand, five hundred forty-two".