72542006 has 4 divisors (see below), whose sum is σ = 108813012. Its totient is φ = 36271002.

The previous prime is 72542003. The next prime is 72542017. The reversal of 72542006 is 60024527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60024527 = 701 ⋅85627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72542003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18135500 + ... + 18135503.

It is an arithmetic number, because the mean of its divisors is an integer number (27203253).

Almost surely, 2^72542006 is an apocalyptic number.

72542006 is a deficient number, since it is larger than the sum of its proper divisors (36271006).

72542006 is a wasteful number, since it uses less digits than its factorization.

72542006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36271005.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 72542006 is about 8517.1595030268. The cubic root of 72542006 is about 417.0580615268.

The spelling of 72542006 in words is "seventy-two million, five hundred forty-two thousand, six".