1000140120 has 96 divisors (see below), whose sum is σ = 3714815520. Its totient is φ = 228602880.

The previous prime is 1000140109. The next prime is 1000140133. The reversal of 1000140120 is 210410001.

It is a happy number.

It is a super-2 number, since 2×1000140120² = 2000560519267228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195921 + ... + 200960.

It is an arithmetic number, because the mean of its divisors is an integer number (38695995).

Almost surely, 2^1000140120 is an apocalyptic number.

1000140120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000140120 is an abundant number, since it is smaller than the sum of its proper divisors (2714675400).

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

1000140120 is a wasteful number, since it uses less digits than its factorization.

1000140120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396905 (or 396898 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1000140120 is about 31624.9920158093. The cubic root of 1000140120 is about 1000.0467044853.

Adding to 1000140120 its reverse (210410001), we get a palindrome (1210550121).

The spelling of 1000140120 in words is "one billion, one hundred forty thousand, one hundred twenty".