72421022743 has 8 divisors (see below), whose sum is σ = 74394028800. Its totient is φ = 70448842080.

The previous prime is 72421022719. The next prime is 72421022749. The reversal of 72421022743 is 34722012427.

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

It is a cyclic number.

It is not a de Polignac number, because 72421022743 - 2¹³ = 72421014551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72421022699 and 72421022708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72421022749) 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, 26368 + ... + 381493.

It is an arithmetic number, because the mean of its divisors is an integer number (9299253600).

Almost surely, 2^72421022743 is an apocalyptic number.

72421022743 is a deficient number, since it is larger than the sum of its proper divisors (1973006057).

72421022743 is a wasteful number, since it uses less digits than its factorization.

72421022743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412697.

The product of its (nonzero) digits is 37632, while the sum is 34.

The spelling of 72421022743 in words is "seventy-two billion, four hundred twenty-one million, twenty-two thousand, seven hundred forty-three".