61423123 has 4 divisors (see below), whose sum is σ = 62019568. Its totient is φ = 60826680.

The previous prime is 61423111. The next prime is 61423147. The reversal of 61423123 is 32132416.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61423123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61423094 and 61423103.

It is not an unprimeable number, because it can be changed into a prime (61423163) 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, 298068 + ... + 298273.

It is an arithmetic number, because the mean of its divisors is an integer number (15504892).

Almost surely, 2^61423123 is an apocalyptic number.

61423123 is a deficient number, since it is larger than the sum of its proper divisors (596445).

61423123 is a wasteful number, since it uses less digits than its factorization.

61423123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596444.

The product of its digits is 864, while the sum is 22.

The square root of 61423123 is about 7837.2905394658. The cubic root of 61423123 is about 394.5577981491.

Adding to 61423123 its reverse (32132416), we get a palindrome (93555539).

The spelling of 61423123 in words is "sixty-one million, four hundred twenty-three thousand, one hundred twenty-three".