42064154065634 has 4 divisors (see below), whose sum is σ = 63096231098454. Its totient is φ = 21032077032816.

The previous prime is 42064154065607. The next prime is 42064154065639. The reversal of 42064154065634 is 43656045146024.

It is a happy number.

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., 32468377798609 + 9595776267025 = 5698103^2 + 3097705^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42064154065639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516038516407 + ... + 10516038516410.

Almost surely, 2^{42064154065634} is an apocalyptic number.

42064154065634 is a deficient number, since it is larger than the sum of its proper divisors (21032077032820).

42064154065634 is a wasteful number, since it uses less digits than its factorization.

42064154065634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21032077032819.

The product of its (nonzero) digits is 8294400, while the sum is 50.

The spelling of 42064154065634 in words is "forty-two trillion, sixty-four billion, one hundred fifty-four million, sixty-five thousand, six hundred thirty-four".