61671942 has 28 divisors (see below), whose sum is σ = 138701700. Its totient is φ = 20556828.

The previous prime is 61671941. The next prime is 61671977. The reversal of 61671942 is 24917616.

It is a junction number, because it is equal to n+sod(n) for n = 61671897 and 61671906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61671941) by changing a digit.

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 in 13 ways as a sum of consecutive naturals, for example, 19692 + ... + 22607.

Almost surely, 2^61671942 is an apocalyptic number.

61671942 is an abundant number, since it is smaller than the sum of its proper divisors (77029758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61671942 is an equidigital number, since it uses as much as digits as its factorization.

61671942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42319 (or 42304 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 61671942 is about 7853.1485405537. The cubic root of 61671942 is about 395.0898519091.

The spelling of 61671942 in words is "sixty-one million, six hundred seventy-one thousand, nine hundred forty-two".