42125440642354 has 4 divisors (see below), whose sum is σ = 63188160963534. Its totient is φ = 21062720321176.

The previous prime is 42125440642343. The next prime is 42125440642433. The reversal of 42125440642354 is 45324604452124.

It is a happy number.

42125440642354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 26883654653025 + 15241785989329 = 5184945^2 + 3904073^2 .

It is a super-2 number, since 2×42125440642354² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10531360160587 + ... + 10531360160590.

Almost surely, 2^{42125440642354} is an apocalyptic number.

42125440642354 is a deficient number, since it is larger than the sum of its proper divisors (21062720321180).

42125440642354 is a wasteful number, since it uses less digits than its factorization.

42125440642354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21062720321179.

The product of its (nonzero) digits is 3686400, while the sum is 46.

The spelling of 42125440642354 in words is "forty-two trillion, one hundred twenty-five billion, four hundred forty million, six hundred forty-two thousand, three hundred fifty-four".