40428421140 has 96 divisors (see below), whose sum is σ = 119970958464. Its totient is φ = 10137210880.

The previous prime is 40428421139. The next prime is 40428421171. The reversal of 40428421140 is 4112482404.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 40428421098 and 40428421107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1100875 + ... + 1137005.

It is an arithmetic number, because the mean of its divisors is an integer number (1249697484).

Almost surely, 2^40428421140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40428421140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59985479232).

40428421140 is an abundant number, since it is smaller than the sum of its proper divisors (79542537324).

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

40428421140 is a wasteful number, since it uses less digits than its factorization.

40428421140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37257 (or 37255 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The spelling of 40428421140 in words is "forty billion, four hundred twenty-eight million, four hundred twenty-one thousand, one hundred forty".