61403123 has 8 divisors (see below), whose sum is σ = 64201248. Its totient is φ = 58615744.

The previous prime is 61403119. The next prime is 61403159. The reversal of 61403123 is 32130416.

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

It is a cyclic number.

It is not a de Polignac number, because 61403123 - 2² = 61403119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61403095 and 61403104.

It is not an unprimeable number, because it can be changed into a prime (61403113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10415 + ... + 15207.

It is an arithmetic number, because the mean of its divisors is an integer number (8025156).

Almost surely, 2^61403123 is an apocalyptic number.

61403123 is a deficient number, since it is larger than the sum of its proper divisors (2798125).

61403123 is a wasteful number, since it uses less digits than its factorization.

61403123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5373.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 61403123 is about 7836.0144844174. The cubic root of 61403123 is about 394.5149694758.

Adding to 61403123 its reverse (32130416), we get a palindrome (93533539).

The spelling of 61403123 in words is "sixty-one million, four hundred three thousand, one hundred twenty-three".