971542 has 32 divisors (see below), whose sum is σ = 1774080. Its totient is φ = 393120.

The previous prime is 971521. The next prime is 971549. The reversal of 971542 is 245179.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 971542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971549) 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 15 ways as a sum of consecutive naturals, for example, 12259 + ... + 12337.

It is an arithmetic number, because the mean of its divisors is an integer number (55440).

2⁹⁷¹⁵⁴² is an apocalyptic number.

971542 is a deficient number, since it is larger than the sum of its proper divisors (802538).

971542 is a wasteful number, since it uses less digits than its factorization.

971542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148.

The product of its digits is 2520, while the sum is 28.

The square root of 971542 is about 985.6683012048. The cubic root of 971542 is about 99.0422565587.

The spelling of 971542 in words is "nine hundred seventy-one thousand, five hundred forty-two".