40145243124 has 72 divisors (see below), whose sum is σ = 110278633248. Its totient is φ = 11331862080.

The previous prime is 40145243107. The next prime is 40145243137. The reversal of 40145243124 is 42134254104.

It is a super-2 number, since 2×40145243124² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40145243091 and 40145243100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 362487 + ... + 460094.

It is an arithmetic number, because the mean of its divisors is an integer number (1531647684).

Almost surely, 2^40145243124 is an apocalyptic number.

It is an amenable number.

40145243124 is an abundant number, since it is smaller than the sum of its proper divisors (70133390124).

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

40145243124 is a wasteful number, since it uses less digits than its factorization.

40145243124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822685 (or 822676 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 40145243124 its reverse (42134254104), we get a palindrome (82279497228).

The spelling of 40145243124 in words is "forty billion, one hundred forty-five million, two hundred forty-three thousand, one hundred twenty-four".