61942378 has 4 divisors (see below), whose sum is σ = 92913570. Its totient is φ = 30971188.

The previous prime is 61942369. The next prime is 61942393. The reversal of 61942378 is 87324916.

61942378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 55905529 + 6036849 = 7477^2 + 2457^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 61942378.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15485593 + ... + 15485596.

Almost surely, 2^61942378 is an apocalyptic number.

61942378 is a deficient number, since it is larger than the sum of its proper divisors (30971192).

61942378 is a wasteful number, since it uses less digits than its factorization.

61942378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30971191.

The product of its digits is 72576, while the sum is 40.

The square root of 61942378 is about 7870.3480228005. The cubic root of 61942378 is about 395.6665091834. Note that the first 3 decimals are identical.

The spelling of 61942378 in words is "sixty-one million, nine hundred forty-two thousand, three hundred seventy-eight".