40144542492 has 48 divisors (see below), whose sum is σ = 100660976640. Its totient is φ = 12406386432.

The previous prime is 40144542479. The next prime is 40144542497. The reversal of 40144542492 is 29424544104.

It is a super-2 number, since 2×40144542492² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40144542492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40144542497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1454892 + ... + 1482227.

It is an arithmetic number, because the mean of its divisors is an integer number (2097103680).

Almost surely, 2^40144542492 is an apocalyptic number.

It is an amenable number.

40144542492 is an abundant number, since it is smaller than the sum of its proper divisors (60516434148).

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

40144542492 is a wasteful number, since it uses less digits than its factorization.

40144542492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2937210 (or 2937208 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 39.

The spelling of 40144542492 in words is "forty billion, one hundred forty-four million, five hundred forty-two thousand, four hundred ninety-two".