1172487 has 4 divisors (see below), whose sum is σ = 1563320. Its totient is φ = 781656.

The previous prime is 1172467. The next prime is 1172491. The reversal of 1172487 is 7842711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7842711 = 3 ⋅2614237.

It is not a de Polignac number, because 1172487 - 2¹⁰ = 1171463 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172407) 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, 195412 + ... + 195417.

It is an arithmetic number, because the mean of its divisors is an integer number (390830).

2^1172487 is an apocalyptic number.

1172487 is a deficient number, since it is larger than the sum of its proper divisors (390833).

1172487 is an equidigital number, since it uses as much as digits as its factorization.

1172487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390832.

The product of its digits is 3136, while the sum is 30.

The square root of 1172487 is about 1082.8143885265. The cubic root of 1172487 is about 105.4474330635.

It can be divided in two parts, 11724 and 87, that added together give a palindrome (11811).

The spelling of 1172487 in words is "one million, one hundred seventy-two thousand, four hundred eighty-seven".