72420041 has 4 divisors (see below), whose sum is σ = 74104272. Its totient is φ = 70735812.

The previous prime is 72420013. The next prime is 72420043. The reversal of 72420041 is 14002427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72420041 - 2²² = 68225737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72419995 and 72420022.

It is not an unprimeable number, because it can be changed into a prime (72420043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 842051 + ... + 842136.

It is an arithmetic number, because the mean of its divisors is an integer number (18526068).

Almost surely, 2^72420041 is an apocalyptic number.

It is an amenable number.

72420041 is a deficient number, since it is larger than the sum of its proper divisors (1684231).

72420041 is a wasteful number, since it uses less digits than its factorization.

72420041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684230.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 72420041 is about 8509.9965334893. The cubic root of 72420041 is about 416.8241969324.

Adding to 72420041 its reverse (14002427), we get a palindrome (86422468).

The spelling of 72420041 in words is "seventy-two million, four hundred twenty thousand, forty-one".