40107142 has 4 divisors (see below), whose sum is σ = 60160716. Its totient is φ = 20053570.

The previous prime is 40107139. The next prime is 40107169. The reversal of 40107142 is 24170104.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10026784 + ... + 10026787.

It is an arithmetic number, because the mean of its divisors is an integer number (15040179).

Almost surely, 2^40107142 is an apocalyptic number.

40107142 is a deficient number, since it is larger than the sum of its proper divisors (20053574).

40107142 is a wasteful number, since it uses less digits than its factorization.

40107142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20053573.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 40107142 is about 6333.0199747040. The cubic root of 40107142 is about 342.3002675130.

Adding to 40107142 its reverse (24170104), we get a palindrome (64277246).

The spelling of 40107142 in words is "forty million, one hundred seven thousand, one hundred forty-two".