61662142 has 4 divisors (see below), whose sum is σ = 92493216. Its totient is φ = 30831070.

The previous prime is 61662127. The next prime is 61662157. The reversal of 61662142 is 24126616.

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

It is an interprime number because it is at equal distance from previous prime (61662127) and next prime (61662157).

It is a self number, because there is not a number n which added to its sum of digits gives 61662142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15415534 + ... + 15415537.

It is an arithmetic number, because the mean of its divisors is an integer number (23123304).

Almost surely, 2^61662142 is an apocalyptic number.

61662142 is a deficient number, since it is larger than the sum of its proper divisors (30831074).

61662142 is a wasteful number, since it uses less digits than its factorization.

61662142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30831073.

The product of its digits is 3456, while the sum is 28.

The square root of 61662142 is about 7852.5245622029. The cubic root of 61662142 is about 395.0689235067.

Adding to 61662142 its reverse (24126616), we get a palindrome (85788758).

The spelling of 61662142 in words is "sixty-one million, six hundred sixty-two thousand, one hundred forty-two".