142421421440566 has 4 divisors (see below), whose sum is σ = 213632132160852. Its totient is φ = 71210710720282.

The previous prime is 142421421440563. The next prime is 142421421440591. The reversal of 142421421440566 is 665044124124241.

It is a happy number.

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

It is a super-2 number, since 2×142421421440566² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142421421440563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35605355360140 + ... + 35605355360143.

It is an arithmetic number, because the mean of its divisors is an integer number (53408033040213).

Almost surely, 2^{142421421440566} is an apocalyptic number.

142421421440566 is a deficient number, since it is larger than the sum of its proper divisors (71210710720286).

142421421440566 is an equidigital number, since it uses as much as digits as its factorization.

142421421440566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71210710720285.

The product of its (nonzero) digits is 1474560, while the sum is 46.

The spelling of 142421421440566 in words is "one hundred forty-two trillion, four hundred twenty-one billion, four hundred twenty-one million, four hundred forty thousand, five hundred sixty-six".