742686421077 has 12 divisors (see below), whose sum is σ = 1072814917824. Its totient is φ = 495103214760.

The previous prime is 742686421049. The next prime is 742686421093. The reversal of 742686421077 is 770124686247.

742686421077 is a `hidden beast` number, since 74 + 2 + 6 + 86 + 421 + 0 + 77 = 666.

It is not a de Polignac number, because 742686421077 - 2¹⁰ = 742686420053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742686421177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1530699 + ... + 1956632.

It is an arithmetic number, because the mean of its divisors is an integer number (89401243152).

Almost surely, 2^742686421077 is an apocalyptic number.

It is an amenable number.

742686421077 is a deficient number, since it is larger than the sum of its proper divisors (330128496747).

742686421077 is a wasteful number, since it uses less digits than its factorization.

742686421077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511000 (or 3510997 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 54.

The spelling of 742686421077 in words is "seven hundred forty-two billion, six hundred eighty-six million, four hundred twenty-one thousand, seventy-seven".