42049128877 has 8 divisors (see below), whose sum is σ = 48184987136. Its totient is φ = 35945480592.

The previous prime is 42049128853. The next prime is 42049128949. The reversal of 42049128877 is 77882194024.

42049128877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42049128877 - 2²⁷ = 41914911149 is a prime.

It is a super-2 number, since 2×42049128877² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42049128577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8049693 + ... + 8054914.

It is an arithmetic number, because the mean of its divisors is an integer number (6023123392).

Almost surely, 2^42049128877 is an apocalyptic number.

It is an amenable number.

42049128877 is a deficient number, since it is larger than the sum of its proper divisors (6135858259).

42049128877 is a wasteful number, since it uses less digits than its factorization.

42049128877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16104987.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 42049128877 in words is "forty-two billion, forty-nine million, one hundred twenty-eight thousand, eight hundred seventy-seven".