890542 has 4 divisors (see below), whose sum is σ = 1335816. Its totient is φ = 445270.

The previous prime is 890531. The next prime is 890543. The reversal of 890542 is 245098.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 890542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890543) by changing a digit.

890542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222634 + ... + 222637.

It is an arithmetic number, because the mean of its divisors is an integer number (333954).

2⁸⁹⁰⁵⁴² is an apocalyptic number.

890542 is a deficient number, since it is larger than the sum of its proper divisors (445274).

890542 is a wasteful number, since it uses less digits than its factorization.

890542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445273.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 890542 is about 943.6853289100. The cubic root of 890542 is about 96.2095394116.

The spelling of 890542 in words is "eight hundred ninety thousand, five hundred forty-two".