742321995661 has 8 divisors (see below), whose sum is σ = 781554697920. Its totient is φ = 703105605792.

The previous prime is 742321995641. The next prime is 742321995691. The reversal of 742321995661 is 166599123247.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742321995661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742321995641) 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, 3984625 + ... + 4166758.

It is an arithmetic number, because the mean of its divisors is an integer number (97694337240).

Almost surely, 2^742321995661 is an apocalyptic number.

It is an amenable number.

742321995661 is a deficient number, since it is larger than the sum of its proper divisors (39232702259).

742321995661 is a wasteful number, since it uses less digits than its factorization.

742321995661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8156195.

The product of its digits is 4898880, while the sum is 55.

The spelling of 742321995661 in words is "seven hundred forty-two billion, three hundred twenty-one million, nine hundred ninety-five thousand, six hundred sixty-one".