61942421 has 4 divisors (see below), whose sum is σ = 61968192. Its totient is φ = 61916652.

The previous prime is 61942417. The next prime is 61942453. The reversal of 61942421 is 12424916.

61942421 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61942421 - 2² = 61942417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61942121) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 8861 + ... + 14226.

It is an arithmetic number, because the mean of its divisors is an integer number (15492048).

Almost surely, 2^61942421 is an apocalyptic number.

It is an amenable number.

61942421 is a deficient number, since it is larger than the sum of its proper divisors (25771).

61942421 is a wasteful number, since it uses less digits than its factorization.

61942421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25770.

The product of its digits is 3456, while the sum is 29.

The square root of 61942421 is about 7870.3507545725. The cubic root of 61942421 is about 395.6666007398. Note that the first 4 decimals are identical.

The spelling of 61942421 in words is "sixty-one million, nine hundred forty-two thousand, four hundred twenty-one".