742101720781 has 16 divisors (see below), whose sum is σ = 754272066240. Its totient is φ = 729987189120.

The previous prime is 742101720769. The next prime is 742101720791. The reversal of 742101720781 is 187027101247.

It is a cyclic number.

It is not a de Polignac number, because 742101720781 - 2⁷ = 742101720653 is a prime.

It is a super-2 number, since 2×742101720781² (a number of 25 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 (742101720791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90286890 + ... + 90295108.

It is an arithmetic number, because the mean of its divisors is an integer number (47142004140).

Almost surely, 2^742101720781 is an apocalyptic number.

It is an amenable number.

742101720781 is a deficient number, since it is larger than the sum of its proper divisors (12170345459).

742101720781 is a wasteful number, since it uses less digits than its factorization.

742101720781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11436.

The product of its (nonzero) digits is 43904, while the sum is 40.

The spelling of 742101720781 in words is "seven hundred forty-two billion, one hundred one million, seven hundred twenty thousand, seven hundred eighty-one".