40023742 has 8 divisors (see below), whose sum is σ = 65493432. Its totient is φ = 18192600.

The previous prime is 40023733. The next prime is 40023757. The reversal of 40023742 is 24732004.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 1819261 = 40023742 / (4 + 0 + 0 + 2 + 3 + 7 + 4 + 2).

It is a congruent number.

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, 909609 + ... + 909652.

It is an arithmetic number, because the mean of its divisors is an integer number (8186679).

Almost surely, 2^40023742 is an apocalyptic number.

40023742 is a deficient number, since it is larger than the sum of its proper divisors (25469690).

40023742 is a wasteful number, since it uses less digits than its factorization.

40023742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819274.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 40023742 is about 6326.4320118057. The cubic root of 40023742 is about 342.0628397007.

Adding to 40023742 its reverse (24732004), we get a palindrome (64755746).

It can be divided in two parts, 4002 and 3742, that added together give a square (7744 = 88²).

The spelling of 40023742 in words is "forty million, twenty-three thousand, seven hundred forty-two".