142006622021 has 4 divisors (see below), whose sum is σ = 154916314944. Its totient is φ = 129096929100.

The previous prime is 142006621993. The next prime is 142006622029. The reversal of 142006622021 is 120226600241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120226600241 = 11 ⋅10929690931.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142006622021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142006622029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6454846445 + ... + 6454846466.

It is an arithmetic number, because the mean of its divisors is an integer number (38729078736).

Almost surely, 2^142006622021 is an apocalyptic number.

142006622021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142006622021 is a deficient number, since it is larger than the sum of its proper divisors (12909692923).

142006622021 is a wasteful number, since it uses less digits than its factorization.

142006622021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12909692922.

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 142006622021 in words is "one hundred forty-two billion, six million, six hundred twenty-two thousand, twenty-one".