40660142 has 4 divisors (see below), whose sum is σ = 60990216. Its totient is φ = 20330070.

The previous prime is 40660129. The next prime is 40660181. The reversal of 40660142 is 24106604.

It is a happy number.

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, 10165034 + ... + 10165037.

It is an arithmetic number, because the mean of its divisors is an integer number (15247554).

Almost surely, 2^40660142 is an apocalyptic number.

40660142 is a deficient number, since it is larger than the sum of its proper divisors (20330074).

40660142 is a wasteful number, since it uses less digits than its factorization.

40660142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20330073.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 40660142 is about 6376.5305613633. The cubic root of 40660142 is about 343.8663116265.

Adding to 40660142 its reverse (24106604), we get a palindrome (64766746).

The spelling of 40660142 in words is "forty million, six hundred sixty thousand, one hundred forty-two".