123242402434 has 4 divisors (see below), whose sum is σ = 184863603654. Its totient is φ = 61621201216.

The previous prime is 123242402363. The next prime is 123242402449. The reversal of 123242402434 is 434204242321.

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

It can be written as a sum of positive squares in only one way, i.e., 78257265025 + 44985137409 = 279745^2 + 212097^2 .

It is a super-3 number, since 3×123242402434³ (a number of 34 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 123242402396 and 123242402405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30810600607 + ... + 30810600610.

Almost surely, 2^123242402434 is an apocalyptic number.

123242402434 is a deficient number, since it is larger than the sum of its proper divisors (61621201220).

123242402434 is an equidigital number, since it uses as much as digits as its factorization.

123242402434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61621201219.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 123242402434 its reverse (434204242321), we get a palindrome (557446644755).

The spelling of 123242402434 in words is "one hundred twenty-three billion, two hundred forty-two million, four hundred two thousand, four hundred thirty-four".