40122151423 has 4 divisors (see below), whose sum is σ = 40122752848. Its totient is φ = 40121550000.

The previous prime is 40122151393. The next prime is 40122151541. The reversal of 40122151423 is 32415122104.

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

It is a cyclic number.

It is not a de Polignac number, because 40122151423 - 2²⁵ = 40088596991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40122152423) 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, 186078 + ... + 338923.

It is an arithmetic number, because the mean of its divisors is an integer number (10030688212).

Almost surely, 2^40122151423 is an apocalyptic number.

40122151423 is a deficient number, since it is larger than the sum of its proper divisors (601425).

40122151423 is an equidigital number, since it uses as much as digits as its factorization.

40122151423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601424.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 40122151423 its reverse (32415122104), we get a palindrome (72537273527).

The spelling of 40122151423 in words is "forty billion, one hundred twenty-two million, one hundred fifty-one thousand, four hundred twenty-three".