42115520654 has 4 divisors (see below), whose sum is σ = 63173280984. Its totient is φ = 21057760326.

The previous prime is 42115520617. The next prime is 42115520701. The reversal of 42115520654 is 45602551124.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10528880162 + ... + 10528880165.

It is an arithmetic number, because the mean of its divisors is an integer number (15793320246).

Almost surely, 2^42115520654 is an apocalyptic number.

42115520654 is a deficient number, since it is larger than the sum of its proper divisors (21057760330).

42115520654 is a wasteful number, since it uses less digits than its factorization.

42115520654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21057760329.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 42115520654 in words is "forty-two billion, one hundred fifteen million, five hundred twenty thousand, six hundred fifty-four".