1012161240 has 48 divisors (see below), whose sum is σ = 3289525200. Its totient is φ = 269909568.

The previous prime is 1012161221. The next prime is 1012161263. The reversal of 1012161240 is 421612101.

1012161240 is a `hidden beast` number, since 1 + 0 + 12 + 1 + 612 + 40 = 666.

1012161240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1405420 + ... + 1406139.

It is an arithmetic number, because the mean of its divisors is an integer number (68531775).

Almost surely, 2^1012161240 is an apocalyptic number.

1012161240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012161240 is an abundant number, since it is smaller than the sum of its proper divisors (2277363960).

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

1012161240 is a wasteful number, since it uses less digits than its factorization.

1012161240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811576 (or 2811569 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1012161240 is about 31814.4816082236. The cubic root of 1012161240 is about 1004.0374239369.

Adding to 1012161240 its reverse (421612101), we get a palindrome (1433773341).

The spelling of 1012161240 in words is "one billion, twelve million, one hundred sixty-one thousand, two hundred forty".