61000142 has 16 divisors (see below), whose sum is σ = 105217152. Its totient is φ = 25981560.

The previous prime is 61000141. The next prime is 61000189. The reversal of 61000142 is 24100016.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61000141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11084 + ... + 15647.

It is an arithmetic number, because the mean of its divisors is an integer number (6576072).

Almost surely, 2^61000142 is an apocalyptic number.

61000142 is a deficient number, since it is larger than the sum of its proper divisors (44217010).

61000142 is a wasteful number, since it uses less digits than its factorization.

61000142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26903.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 61000142 is about 7810.2587665198. The cubic root of 61000142 is about 393.6500237650.

Adding to 61000142 its reverse (24100016), we get a palindrome (85100158).

It can be divided in two parts, 6100014 and 2, that added together give a palindrome (6100016).

The spelling of 61000142 in words is "sixty-one million, one hundred forty-two", and thus it is an aban number.