20122403142 has 16 divisors (see below), whose sum is σ = 40252154112. Its totient is φ = 6706243080.

The previous prime is 20122403123. The next prime is 20122403143. The reversal of 20122403142 is 24130422102.

It is a super-2 number, since 2×20122403142² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122403143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270234 + ... + 336557.

It is an arithmetic number, because the mean of its divisors is an integer number (2515759632).

Almost surely, 2^20122403142 is an apocalyptic number.

20122403142 is an abundant number, since it is smaller than the sum of its proper divisors (20129750970).

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

20122403142 is a wasteful number, since it uses less digits than its factorization.

20122403142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612323.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20122403142 its reverse (24130422102), we get a palindrome (44252825244).

The spelling of 20122403142 in words is "twenty billion, one hundred twenty-two million, four hundred three thousand, one hundred forty-two".