102023402020 has 24 divisors (see below), whose sum is σ = 214257496824. Its totient is φ = 40807769856.

The previous prime is 102023402009. The next prime is 102023402027. The reversal of 102023402020 is 20204320201.

It can be written as a sum of positive squares in 4 ways, for example, as 28834756864 + 73188645156 = 169808^2 + 270534^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102023401985 and 102023402003.

It is not an unprimeable number, because it can be changed into a prime (102023402027) 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, 520752 + ... + 689368.

It is an arithmetic number, because the mean of its divisors is an integer number (8927395701).

Almost surely, 2^102023402020 is an apocalyptic number.

102023402020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102023402020 is an abundant number, since it is smaller than the sum of its proper divisors (112234094804).

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

102023402020 is a wasteful number, since it uses less digits than its factorization.

102023402020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198879 (or 198877 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 102023402020 its reverse (20204320201), we get a palindrome (122227722221).

The spelling of 102023402020 in words is "one hundred two billion, twenty-three million, four hundred two thousand, twenty".