142421623642145 has 96 divisors (see below), whose sum is σ = 189097747969536. Its totient is φ = 102879749836800.

The previous prime is 142421623642099. The next prime is 142421623642153. The reversal of 142421623642145 is 541246326124241.

It is not a de Polignac number, because 142421623642145 - 2⁴⁴ = 124829437597729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142421623642145.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1213786130 + ... + 1213903460.

It is an arithmetic number, because the mean of its divisors is an integer number (1969768208016).

Almost surely, 2^{142421623642145} is an apocalyptic number.

It is an amenable number.

142421623642145 is a deficient number, since it is larger than the sum of its proper divisors (46676124327391).

142421623642145 is a wasteful number, since it uses less digits than its factorization.

142421623642145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117771 (or 117754 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 47.

Adding to 142421623642145 its reverse (541246326124241), we get a palindrome (683667949766386).

The spelling of 142421623642145 in words is "one hundred forty-two trillion, four hundred twenty-one billion, six hundred twenty-three million, six hundred forty-two thousand, one hundred forty-five".