305542 has 8 divisors (see below), whose sum is σ = 461016. Its totient is φ = 151872.

The previous prime is 305533. The next prime is 305551. The reversal of 305542 is 245503.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (305533) and next prime (305551).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 12.

It is a congruent number.

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, 118 + ... + 790.

It is an arithmetic number, because the mean of its divisors is an integer number (57627).

2³⁰⁵⁵⁴² is an apocalyptic number.

305542 is a deficient number, since it is larger than the sum of its proper divisors (155474).

305542 is a wasteful number, since it uses less digits than its factorization.

305542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 305542 is about 552.7585367952. The cubic root of 305542 is about 67.3530043062.

The spelling of 305542 in words is "three hundred five thousand, five hundred forty-two".