142420252443101 has 4 divisors (see below), whose sum is σ = 142778993633532. Its totient is φ = 142061511252672.

The previous prime is 142420252443061. The next prime is 142420252443107. The reversal of 142420252443101 is 101344252024241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 70081995507001 + 72338256936100 = 8371499^2 + 8505190^2 .

It is a cyclic number.

It is not a de Polignac number, because 142420252443101 - 2¹⁸ = 142420252180957 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 (142420252443107) 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, 179370594620 + ... + 179370595413.

It is an arithmetic number, because the mean of its divisors is an integer number (35694748408383).

Almost surely, 2^{142420252443101} is an apocalyptic number.

It is an amenable number.

142420252443101 is a deficient number, since it is larger than the sum of its proper divisors (358741190431).

142420252443101 is an equidigital number, since it uses as much as digits as its factorization.

142420252443101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358741190430.

The product of its (nonzero) digits is 61440, while the sum is 35.

The spelling of 142420252443101 in words is "one hundred forty-two trillion, four hundred twenty billion, two hundred fifty-two million, four hundred forty-three thousand, one hundred one".