1172542 has 16 divisors (see below), whose sum is σ = 2044512. Its totient is φ = 493920.

The previous prime is 1172539. The next prime is 1172543. The reversal of 1172542 is 2452711.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168 + ... + 1540.

It is an arithmetic number, because the mean of its divisors is an integer number (127782).

2^1172542 is an apocalyptic number.

1172542 is a deficient number, since it is larger than the sum of its proper divisors (871970).

1172542 is a wasteful number, since it uses less digits than its factorization.

1172542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443.

The product of its digits is 560, while the sum is 22.

The square root of 1172542 is about 1082.8397850098. The cubic root of 1172542 is about 105.4490818432.

The spelling of 1172542 in words is "one million, one hundred seventy-two thousand, five hundred forty-two".