1201745 has 4 divisors (see below), whose sum is σ = 1442100. Its totient is φ = 961392.

The previous prime is 1201729. The next prime is 1201787. The reversal of 1201745 is 5471021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5471021 = 521 ⋅10501.

It can be written as a sum of positive squares in 2 ways, for example, as 456976 + 744769 = 676^2 + 863^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201745 - 2⁴ = 1201729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120170 + ... + 120179.

It is an arithmetic number, because the mean of its divisors is an integer number (360525).

2^1201745 is an apocalyptic number.

It is an amenable number.

1201745 is a deficient number, since it is larger than the sum of its proper divisors (240355).

1201745 is an equidigital number, since it uses as much as digits as its factorization.

1201745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240354.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 1201745 is about 1096.2413055528. The cubic root of 1201745 is about 106.3173413930.

Adding to 1201745 its product of nonzero digits (280), we get a triangular number (1202025 = T₁₅₅₀).

Adding to 1201745 its reverse (5471021), we get a palindrome (6672766).

The spelling of 1201745 in words is "one million, two hundred one thousand, seven hundred forty-five".