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61942 = 230971
BaseRepresentation
bin1111000111110110
310010222011
433013312
53440232
61154434
7345406
oct170766
9103864
1061942
11425a1
122ba1a
132226a
1418806
1513547
hexf1f6

61942 has 4 divisors (see below), whose sum is σ = 92916. Its totient is φ = 30970.

The previous prime is 61933. The next prime is 61949. The reversal of 61942 is 24916.

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

It is a super-2 number, since 2×619422 = 7673622728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61949) by changing a digit.

61942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 15484 + ... + 15487.

It is an arithmetic number, because the mean of its divisors is an integer number (23229).

261942 is an apocalyptic number.

61942 is a deficient number, since it is larger than the sum of its proper divisors (30974).

61942 is a wasteful number, since it uses less digits than its factorization.

61942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30973.

The product of its digits is 432, while the sum is 22.

The square root of 61942 is about 248.8814979061. The cubic root of 61942 is about 39.5665704337.

The spelling of 61942 in words is "sixty-one thousand, nine hundred forty-two".

Divisors: 1 2 30971 61942