20132243042 has 16 divisors (see below), whose sum is σ = 30558691800. Its totient is φ = 9946168320.

The previous prime is 20132243029. The next prime is 20132243069. The reversal of 20132243042 is 24034223102.

It can be written as a sum of positive squares in 4 ways, for example, as 11365478881 + 8766764161 = 106609^2 + 93631^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20132242999 and 20132243017.

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, 225434 + ... + 301802.

Almost surely, 2^20132243042 is an apocalyptic number.

20132243042 is a deficient number, since it is larger than the sum of its proper divisors (10426448758).

20132243042 is a wasteful number, since it uses less digits than its factorization.

20132243042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77941.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20132243042 its reverse (24034223102), we get a palindrome (44166466144).

The spelling of 20132243042 in words is "twenty billion, one hundred thirty-two million, two hundred forty-three thousand, forty-two".