40723642 has 8 divisors (see below), whose sum is σ = 61132500. Its totient is φ = 20346144.

The previous prime is 40723601. The next prime is 40723651. The reversal of 40723642 is 24632704.

It can be written as a sum of positive squares in 2 ways, for example, as 39929761 + 793881 = 6319^2 + 891^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 40723642.

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, 4267 + ... + 9982.

Almost surely, 2^40723642 is an apocalyptic number.

40723642 is a deficient number, since it is larger than the sum of its proper divisors (20408858).

40723642 is a wasteful number, since it uses less digits than its factorization.

40723642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15680.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 40723642 is about 6381.5078155558. The cubic root of 40723642 is about 344.0452268371.

The spelling of 40723642 in words is "forty million, seven hundred twenty-three thousand, six hundred forty-two".