40420342422 has 24 divisors (see below), whose sum is σ = 87626486376. Its totient is φ = 13465897056.

The previous prime is 40420342381. The next prime is 40420342423. The reversal of 40420342422 is 22424302404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40420342423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 596143 + ... + 660474.

It is an arithmetic number, because the mean of its divisors is an integer number (3651103599).

Almost surely, 2^40420342422 is an apocalyptic number.

40420342422 is an abundant number, since it is smaller than the sum of its proper divisors (47206143954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40420342422 is a wasteful number, since it uses less digits than its factorization.

40420342422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258412 (or 1258409 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 40420342422 its reverse (22424302404), we get a palindrome (62844644826).

The spelling of 40420342422 in words is "forty billion, four hundred twenty million, three hundred forty-two thousand, four hundred twenty-two".