123434669629 has 4 divisors (see below), whose sum is σ = 123437419740. Its totient is φ = 123431919520.

The previous prime is 123434669609. The next prime is 123434669663. The reversal of 123434669629 is 926966434321.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42481332100 + 80953337529 = 206110^2 + 284523^2 .

It is a cyclic number.

It is not a de Polignac number, because 123434669629 - 2⁵ = 123434669597 is a prime.

It is a super-2 number, since 2×123434669629² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123434669629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123434669609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1306594 + ... + 1397875.

It is an arithmetic number, because the mean of its divisors is an integer number (30859354935).

Almost surely, 2^123434669629 is an apocalyptic number.

It is an amenable number.

123434669629 is a deficient number, since it is larger than the sum of its proper divisors (2750111).

123434669629 is an equidigital number, since it uses as much as digits as its factorization.

123434669629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750110.

The product of its digits is 10077696, while the sum is 55.

The spelling of 123434669629 in words is "one hundred twenty-three billion, four hundred thirty-four million, six hundred sixty-nine thousand, six hundred twenty-nine".