42204721451 has 8 divisors (see below), whose sum is σ = 44459527680. Its totient is φ = 39953265768.

The previous prime is 42204721423. The next prime is 42204721453. The reversal of 42204721451 is 15412740224.

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-42204721451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42204721453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811751 + ... + 862176.

It is an arithmetic number, because the mean of its divisors is an integer number (5557440960).

Almost surely, 2^42204721451 is an apocalyptic number.

42204721451 is a deficient number, since it is larger than the sum of its proper divisors (2254806229).

42204721451 is a wasteful number, since it uses less digits than its factorization.

42204721451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675273.

The product of its (nonzero) digits is 17920, while the sum is 32.

The spelling of 42204721451 in words is "forty-two billion, two hundred four million, seven hundred twenty-one thousand, four hundred fifty-one".