1023250140 has 72 divisors (see below), whose sum is σ = 3386034288. Its totient is φ = 248060160.

The previous prime is 1023250127. The next prime is 1023250147. The reversal of 1023250140 is 410523201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023250147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256417 + ... + 260376.

It is an arithmetic number, because the mean of its divisors is an integer number (47028254).

Almost surely, 2^1023250140 is an apocalyptic number.

1023250140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023250140 is an abundant number, since it is smaller than the sum of its proper divisors (2362784148).

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

1023250140 is a wasteful number, since it uses less digits than its factorization.

1023250140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516819 (or 516814 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1023250140 is about 31988.2812917481. The cubic root of 1023250140 is about 1007.6907474407.

Adding to 1023250140 its reverse (410523201), we get a palindrome (1433773341).

The spelling of 1023250140 in words is "one billion, twenty-three million, two hundred fifty thousand, one hundred forty".