40551442 has 8 divisors (see below), whose sum is σ = 60868656. Its totient is φ = 20261892.

The previous prime is 40551431. The next prime is 40551449. The reversal of 40551442 is 24415504.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (40551449) 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, 2748 + ... + 9415.

It is an arithmetic number, because the mean of its divisors is an integer number (7608582).

Almost surely, 2^40551442 is an apocalyptic number.

40551442 is a deficient number, since it is larger than the sum of its proper divisors (20317214).

40551442 is a wasteful number, since it uses less digits than its factorization.

40551442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13832.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 40551442 is about 6368.0014133164. The cubic root of 40551442 is about 343.5596097430.

Adding to 40551442 its reverse (24415504), we get a palindrome (64966946).

The spelling of 40551442 in words is "forty million, five hundred fifty-one thousand, four hundred forty-two".