20042632340 has 24 divisors (see below), whose sum is σ = 42195563592. Its totient is φ = 7996855680.

The previous prime is 20042632333. The next prime is 20042632373. The reversal of 20042632340 is 4323624002.

It can be written as a sum of positive squares in 4 ways, for example, as 7210727056 + 12831905284 = 84916^2 + 113278^2 .

It is a super-2 number, since 2×20042632340² (a number of 21 digits) contains 22 as substring.

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, 1254191 + ... + 1270070.

It is an arithmetic number, because the mean of its divisors is an integer number (1758148483).

Almost surely, 2^20042632340 is an apocalyptic number.

20042632340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20042632340 is an abundant number, since it is smaller than the sum of its proper divisors (22152931252).

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

20042632340 is a wasteful number, since it uses less digits than its factorization.

20042632340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524667 (or 2524665 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The spelling of 20042632340 in words is "twenty billion, forty-two million, six hundred thirty-two thousand, three hundred forty".