61421642 has 8 divisors (see below), whose sum is σ = 96981600. Its totient is φ = 29094444.

The previous prime is 61421641. The next prime is 61421653. The reversal of 61421642 is 24612416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61421641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808142 + ... + 808217.

It is an arithmetic number, because the mean of its divisors is an integer number (12122700).

Almost surely, 2^61421642 is an apocalyptic number.

61421642 is a deficient number, since it is larger than the sum of its proper divisors (35559958).

61421642 is a wasteful number, since it uses less digits than its factorization.

61421642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616380.

The product of its digits is 2304, while the sum is 26.

The square root of 61421642 is about 7837.1960547124. The cubic root of 61421642 is about 394.5546270046.

The spelling of 61421642 in words is "sixty-one million, four hundred twenty-one thousand, six hundred forty-two".