103402405 has 8 divisors (see below), whose sum is σ = 124192152. Its totient is φ = 82649088.

The previous prime is 103402379. The next prime is 103402433. The reversal of 103402405 is 504204301.

It can be written as a sum of positive squares in 4 ways, for example, as 136161 + 103266244 = 369^2 + 10162^2 .

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 103402405 - 2¹⁹ = 102878117 is a prime.

It is a super-3 number, since 3×103402405³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2412 + ... + 14581.

It is an arithmetic number, because the mean of its divisors is an integer number (15524019).

Almost surely, 2^103402405 is an apocalyptic number.

It is an amenable number.

103402405 is a deficient number, since it is larger than the sum of its proper divisors (20789747).

103402405 is a wasteful number, since it uses less digits than its factorization.

103402405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18215.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 103402405 is about 10168.6973108653. The cubic root of 103402405 is about 469.3644722559.

Adding to 103402405 its reverse (504204301), we get a palindrome (607606706).

The spelling of 103402405 in words is "one hundred three million, four hundred two thousand, four hundred five".