1261415 has 4 divisors (see below), whose sum is σ = 1513704. Its totient is φ = 1009128.

The previous prime is 1261411. The next prime is 1261427. The reversal of 1261415 is 5141621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1261415 - 2² = 1261411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126137 + ... + 126146.

It is an arithmetic number, because the mean of its divisors is an integer number (378426).

2^1261415 is an apocalyptic number.

1261415 is a deficient number, since it is larger than the sum of its proper divisors (252289).

1261415 is an equidigital number, since it uses as much as digits as its factorization.

1261415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252288.

The product of its digits is 240, while the sum is 20.

The square root of 1261415 is about 1123.1273302703. The cubic root of 1261415 is about 108.0486463520.

The spelling of 1261415 in words is "one million, two hundred sixty-one thousand, four hundred fifteen".