40123143153145 has 16 divisors (see below), whose sum is σ = 52068398215680. Its totient is φ = 29505425632704.

The previous prime is 40123143153143. The next prime is 40123143153169. The reversal of 40123143153145 is 54135134132104.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40123143153145 - 2¹ = 40123143153143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40123143153143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1291363389 + ... + 1291394458.

It is an arithmetic number, because the mean of its divisors is an integer number (3254274888480).

Almost surely, 2^{40123143153145} is an apocalyptic number.

It is an amenable number.

40123143153145 is a deficient number, since it is larger than the sum of its proper divisors (11945255062535).

40123143153145 is a wasteful number, since it uses less digits than its factorization.

40123143153145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582758104.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 40123143153145 its reverse (54135134132104), we get a palindrome (94258277285249).

The spelling of 40123143153145 in words is "forty trillion, one hundred twenty-three billion, one hundred forty-three million, one hundred fifty-three thousand, one hundred forty-five".