123434019 has 24 divisors (see below), whose sum is σ = 181110384. Its totient is φ = 81000000.

The previous prime is 123434009. The next prime is 123434029. The reversal of 123434019 is 910434321.

It is an interprime number because it is at equal distance from previous prime (123434009) and next prime (123434029).

It is not a de Polignac number, because 123434019 - 2⁸ = 123433763 is a prime.

It is a super-2 number, since 2×123434019² = 30471914092984722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123433983 and 123434001.

It is not an unprimeable number, because it can be changed into a prime (123434009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 227889 + ... + 228429.

It is an arithmetic number, because the mean of its divisors is an integer number (7546266).

Almost surely, 2^123434019 is an apocalyptic number.

123434019 is a deficient number, since it is larger than the sum of its proper divisors (57676365).

123434019 is a wasteful number, since it uses less digits than its factorization.

123434019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899 (or 896 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 123434019 is about 11110.0863633007. The cubic root of 123434019 is about 497.9032448599.

It can be divided in two parts, 1234 and 34019, that added together give a palindrome (35253).

The spelling of 123434019 in words is "one hundred twenty-three million, four hundred thirty-four thousand, nineteen".