87403123 has 8 divisors (see below), whose sum is σ = 88317792. Its totient is φ = 86492736.

The previous prime is 87403109. The next prime is 87403157. The reversal of 87403123 is 32130478.

87403123 = 257² + 258² + ... + 653².

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 87403123 - 2⁵ = 87403091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87403091 and 87403100.

It is not an unprimeable number, because it can be changed into a prime (87403523) 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, 53586 + ... + 55192.

It is an arithmetic number, because the mean of its divisors is an integer number (11039724).

Almost surely, 2^87403123 is an apocalyptic number.

87403123 is a deficient number, since it is larger than the sum of its proper divisors (914669).

87403123 is a wasteful number, since it uses less digits than its factorization.

87403123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 87403123 is about 9348.9637393671. The cubic root of 87403123 is about 443.7880975556.

The spelling of 87403123 in words is "eighty-seven million, four hundred three thousand, one hundred twenty-three".