34020402140 has 24 divisors (see below), whose sum is σ = 72790824960. Its totient is φ = 13351402688.

The previous prime is 34020402131. The next prime is 34020402191. The reversal of 34020402140 is 4120402043.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16046300 + ... + 16048419.

It is an arithmetic number, because the mean of its divisors is an integer number (3032951040).

Almost surely, 2^34020402140 is an apocalyptic number.

It is an amenable number.

34020402140 is an abundant number, since it is smaller than the sum of its proper divisors (38770422820).

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

34020402140 is a wasteful number, since it uses less digits than its factorization.

34020402140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32094781 (or 32094779 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 34020402140 its reverse (4120402043), we get a palindrome (38140804183).

The spelling of 34020402140 in words is "thirty-four billion, twenty million, four hundred two thousand, one hundred forty".