40402425140 has 240 divisors, whose sum is σ = 111429077760. Its totient is φ = 12031388160.

The previous prime is 40402425103. The next prime is 40402425211. The reversal of 40402425140 is 4152420404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 47143592 + ... + 47144448.

It is an arithmetic number, because the mean of its divisors is an integer number (464287824).

Almost surely, 2^40402425140 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 40402425140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55714538880).

40402425140 is an abundant number, since it is smaller than the sum of its proper divisors (71026652620).

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

40402425140 is a wasteful number, since it uses less digits than its factorization.

40402425140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 40402425140 its reverse (4152420404), we get a palindrome (44554845544).

The spelling of 40402425140 in words is "forty billion, four hundred two million, four hundred twenty-five thousand, one hundred forty".