20432142420 has 48 divisors (see below), whose sum is σ = 57220795968. Its totient is φ = 5447543040.

The previous prime is 20432142407. The next prime is 20432142431. The reversal of 20432142420 is 2424123402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320400 + ... + 378840.

It is an arithmetic number, because the mean of its divisors is an integer number (1192099916).

Almost surely, 2^20432142420 is an apocalyptic number.

20432142420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20432142420 is an abundant number, since it is smaller than the sum of its proper divisors (36788653548).

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

20432142420 is a wasteful number, since it uses less digits than its factorization.

20432142420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64280 (or 64278 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20432142420 its reverse (2424123402), we get a palindrome (22856265822).

The spelling of 20432142420 in words is "twenty billion, four hundred thirty-two million, one hundred forty-two thousand, four hundred twenty".