1023123420 has 96 divisors (see below), whose sum is σ = 3472439040. Its totient is φ = 248028480.

The previous prime is 1023123383. The next prime is 1023123443. The reversal of 1023123420 is 243213201.

1023123420 is a `hidden beast` number, since 10 + 2 + 312 + 342 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1023123393 and 1023123402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80182 + ... + 92061.

It is an arithmetic number, because the mean of its divisors is an integer number (36171240).

Almost surely, 2^1023123420 is an apocalyptic number.

1023123420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023123420 is an abundant number, since it is smaller than the sum of its proper divisors (2449315620).

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

1023123420 is a wasteful number, since it uses less digits than its factorization.

1023123420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172272 (or 172264 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1023123420 is about 31986.3005050600. The cubic root of 1023123420 is about 1007.6491480187.

Adding to 1023123420 its reverse (243213201), we get a palindrome (1266336621).

The spelling of 1023123420 in words is "one billion, twenty-three million, one hundred twenty-three thousand, four hundred twenty".