1202581 has 4 divisors (see below), whose sum is σ = 1230592. Its totient is φ = 1174572.

The previous prime is 1202569. The next prime is 1202603. The reversal of 1202581 is 1852021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1202581 - 2⁵ = 1202549 is a prime.

It is a super-2 number, since 2×1202581² = 2892402123122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202501) 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, 13941 + ... + 14026.

It is an arithmetic number, because the mean of its divisors is an integer number (307648).

2^1202581 is an apocalyptic number.

It is an amenable number.

1202581 is a deficient number, since it is larger than the sum of its proper divisors (28011).

1202581 is an equidigital number, since it uses as much as digits as its factorization.

1202581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28010.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1202581 is about 1096.6225421721. The cubic root of 1202581 is about 106.3419890775.

It can be divided in two parts, 120 and 2581, that added together give a triangular number (2701 = T₇₃).

The spelling of 1202581 in words is "one million, two hundred two thousand, five hundred eighty-one".