61423642 has 32 divisors (see below), whose sum is σ = 108246528. Its totient is φ = 25595136.

The previous prime is 61423631. The next prime is 61423643. The reversal of 61423642 is 24632416.

It is a self number, because there is not a number n which added to its sum of digits gives 61423642.

It is not an unprimeable number, because it can be changed into a prime (61423643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182098 + ... + 182434.

It is an arithmetic number, because the mean of its divisors is an integer number (3382704).

Almost surely, 2^61423642 is an apocalyptic number.

61423642 is a deficient number, since it is larger than the sum of its proper divisors (46822886).

61423642 is a wasteful number, since it uses less digits than its factorization.

61423642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670.

The product of its digits is 6912, while the sum is 28.

The square root of 61423642 is about 7837.3236503286. The cubic root of 61423642 is about 394.5589094294.

The spelling of 61423642 in words is "sixty-one million, four hundred twenty-three thousand, six hundred forty-two".