72142936442 has 8 divisors (see below), whose sum is σ = 108277730100. Its totient is φ = 36050359744.

The previous prime is 72142936423. The next prime is 72142936451. The reversal of 72142936442 is 24463924127.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 72049833241 + 93103201 = 268421^2 + 9649^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 72142936393 and 72142936402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10549967 + ... + 10556802.

Almost surely, 2^72142936442 is an apocalyptic number.

72142936442 is a deficient number, since it is larger than the sum of its proper divisors (36134793658).

72142936442 is a wasteful number, since it uses less digits than its factorization.

72142936442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21108480.

The product of its digits is 580608, while the sum is 44.

The spelling of 72142936442 in words is "seventy-two billion, one hundred forty-two million, nine hundred thirty-six thousand, four hundred forty-two".