1342561 has 4 divisors (see below), whose sum is σ = 1464624. Its totient is φ = 1220500.

The previous prime is 1342547. The next prime is 1342567. The reversal of 1342561 is 1652431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1652431 = 11 ⋅150221.

It is a cyclic number.

It is not a de Polignac number, because 1342561 - 2⁷ = 1342433 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1342567) 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, 61015 + ... + 61036.

It is an arithmetic number, because the mean of its divisors is an integer number (366156).

2^1342561 is an apocalyptic number.

1342561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1342561 is a deficient number, since it is larger than the sum of its proper divisors (122063).

1342561 is a wasteful number, since it uses less digits than its factorization.

1342561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122062.

The product of its digits is 720, while the sum is 22.

The square root of 1342561 is about 1158.6893457696. The cubic root of 1342561 is about 110.3175671580.

Adding to 1342561 its product of digits (720), we get a square (1343281 = 1159²).

Adding to 1342561 its reverse (1652431), we get a palindrome (2994992).

The spelling of 1342561 in words is "one million, three hundred forty-two thousand, five hundred sixty-one".