1012217040 has 80 divisors (see below), whose sum is σ = 3486532800. Its totient is φ = 269923968.

The previous prime is 1012217027. The next prime is 1012217057. The reversal of 1012217040 is 407122101.

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 232150 + ... + 236469.

It is an arithmetic number, because the mean of its divisors is an integer number (43581660).

Almost surely, 2^1012217040 is an apocalyptic number.

1012217040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012217040 is an abundant number, since it is smaller than the sum of its proper divisors (2474315760).

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

1012217040 is a wasteful number, since it uses less digits than its factorization.

1012217040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468641 (or 468629 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 1012217040 is about 31815.3585552638. The cubic root of 1012217040 is about 1004.0558743104.

Adding to 1012217040 its reverse (407122101), we get a palindrome (1419339141).

The spelling of 1012217040 in words is "one billion, twelve million, two hundred seventeen thousand, forty".