42142770387 has 6 divisors (see below), whose sum is σ = 60872890572. Its totient is φ = 28095180252.

The previous prime is 42142770377. The next prime is 42142770401. The reversal of 42142770387 is 78307724124.

It is not a de Polignac number, because 42142770387 - 2²⁷ = 42008552659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42142770377) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2341265013 + ... + 2341265030.

It is an arithmetic number, because the mean of its divisors is an integer number (10145481762).

Almost surely, 2^42142770387 is an apocalyptic number.

42142770387 is a deficient number, since it is larger than the sum of its proper divisors (18730120185).

42142770387 is a wasteful number, since it uses less digits than its factorization.

42142770387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4682530049 (or 4682530046 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The spelling of 42142770387 in words is "forty-two billion, one hundred forty-two million, seven hundred seventy thousand, three hundred eighty-seven".