72141405 has 16 divisors (see below), whose sum is σ = 131915904. Its totient is φ = 32978880.

The previous prime is 72141367. The next prime is 72141413. The reversal of 72141405 is 50414127.

It is not a de Polignac number, because 72141405 - 2⁶ = 72141341 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343426 + ... + 343635.

It is an arithmetic number, because the mean of its divisors is an integer number (8244744).

Almost surely, 2^72141405 is an apocalyptic number.

It is an amenable number.

72141405 is a deficient number, since it is larger than the sum of its proper divisors (59774499).

72141405 is a wasteful number, since it uses less digits than its factorization.

72141405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687076.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 72141405 is about 8493.6096566772. The cubic root of 72141405 is about 416.2889330428.

It can be divided in two parts, 7 and 2141405, that added together give a palindrome (2141412).

The spelling of 72141405 in words is "seventy-two million, one hundred forty-one thousand, four hundred five".