1210015140 has 48 divisors (see below), whose sum is σ = 3504876480. Its totient is φ = 311543680.

The previous prime is 1210015097. The next prime is 1210015153. The reversal of 1210015140 is 415100121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345966 + ... + 349445.

It is an arithmetic number, because the mean of its divisors is an integer number (73018260).

Almost surely, 2^1210015140 is an apocalyptic number.

1210015140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210015140 is an abundant number, since it is smaller than the sum of its proper divisors (2294861340).

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

1210015140 is a wasteful number, since it uses less digits than its factorization.

1210015140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695452 (or 695450 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1210015140 is about 34785.2718833704. The cubic root of 1210015140 is about 1065.6066811607.

Adding to 1210015140 its reverse (415100121), we get a palindrome (1625115261).

The spelling of 1210015140 in words is "one billion, two hundred ten million, fifteen thousand, one hundred forty".