1020123004 has 24 divisors (see below), whose sum is σ = 1852392080. Its totient is φ = 491152896.

The previous prime is 1020123001. The next prime is 1020123017. The reversal of 1020123004 is 4003210201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020123001) 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, 21174 + ... + 49885.

Almost surely, 2^1020123004 is an apocalyptic number.

It is an amenable number.

1020123004 is a deficient number, since it is larger than the sum of its proper divisors (832269076).

1020123004 is a wasteful number, since it uses less digits than its factorization.

1020123004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71197 (or 71195 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1020123004 is about 31939.3644896075. The cubic root of 1020123004 is about 1006.6631715349.

Adding to 1020123004 its reverse (4003210201), we get a palindrome (5023333205).

The spelling of 1020123004 in words is "one billion, twenty million, one hundred twenty-three thousand, four".