40401542 has 8 divisors (see below), whose sum is σ = 60736296. Its totient is φ = 20156112.

The previous prime is 40401541. The next prime is 40401563. The reversal of 40401542 is 24510404.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40401541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21188 + ... + 23015.

It is an arithmetic number, because the mean of its divisors is an integer number (7592037).

Almost surely, 2^40401542 is an apocalyptic number.

40401542 is a deficient number, since it is larger than the sum of its proper divisors (20334754).

40401542 is a wasteful number, since it uses less digits than its factorization.

40401542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44662.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 40401542 is about 6356.2207324793. The cubic root of 40401542 is about 343.1357598514.

Adding to 40401542 its reverse (24510404), we get a palindrome (64911946).

The spelling of 40401542 in words is "forty million, four hundred one thousand, five hundred forty-two".