1012491 has 24 divisors (see below), whose sum is σ = 1597440. Its totient is φ = 615600.

The previous prime is 1012489. The next prime is 1012507. The reversal of 1012491 is 1942101.

It is not a de Polignac number, because 1012491 - 2¹ = 1012489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1012411) 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, 5206 + ... + 5396.

It is an arithmetic number, because the mean of its divisors is an integer number (66560).

2^1012491 is an apocalyptic number.

1012491 is a deficient number, since it is larger than the sum of its proper divisors (584949).

1012491 is a wasteful number, since it uses less digits than its factorization.

1012491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1012491 is about 1006.2261177290. The cubic root of 1012491 is about 100.4146449857.

Adding to 1012491 its reverse (1942101), we get a palindrome (2954592).

The spelling of 1012491 in words is "one million, twelve thousand, four hundred ninety-one".