1240146 has 12 divisors (see below), whose sum is σ = 2687022. Its totient is φ = 413376.

The previous prime is 1240139. The next prime is 1240153. The reversal of 1240146 is 6410421.

It is an interprime number because it is at equal distance from previous prime (1240139) and next prime (1240153).

It can be written as a sum of positive squares in only one way, i.e., 1071225 + 168921 = 1035^2 + 411^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 68897 = 1240146 / (1 + 2 + 4 + 0 + 1 + 4 + 6).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34431 + ... + 34466.

2^1240146 is an apocalyptic number.

1240146 is an abundant number, since it is smaller than the sum of its proper divisors (1446876).

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

1240146 is a wasteful number, since it uses less digits than its factorization.

1240146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68905 (or 68902 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1240146 is about 1113.6184265717. The cubic root of 1240146 is about 107.4379234176.

Adding to 1240146 its reverse (6410421), we get a palindrome (7650567).

The spelling of 1240146 in words is "one million, two hundred forty thousand, one hundred forty-six".