1142505 has 80 divisors (see below), whose sum is σ = 2601984. Its totient is φ = 466560.

The previous prime is 1142503. The next prime is 1142507. The reversal of 1142505 is 5052411.

It is an interprime number because it is at equal distance from previous prime (1142503) and next prime (1142507).

It is not a de Polignac number, because 1142505 - 2¹ = 1142503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1142503) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 36840 + ... + 36870.

2^1142505 is an apocalyptic number.

1142505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1142505 is an abundant number, since it is smaller than the sum of its proper divisors (1459479).

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

1142505 is a wasteful number, since it uses less digits than its factorization.

1142505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1142505 is about 1068.8802552204. The cubic root of 1142505 is about 104.5408522921.

Adding to 1142505 its reverse (5052411), we get a palindrome (6194916).

The spelling of 1142505 in words is "one million, one hundred forty-two thousand, five hundred five".