123011430 has 16 divisors (see below), whose sum is σ = 295227504. Its totient is φ = 32803040.

The previous prime is 123011411. The next prime is 123011437. The reversal of 123011430 is 34110321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123011437) 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, 2050161 + ... + 2050220.

It is an arithmetic number, because the mean of its divisors is an integer number (18451719).

Almost surely, 2^123011430 is an apocalyptic number.

123011430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123011430 is an abundant number, since it is smaller than the sum of its proper divisors (172216074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123011430 is a wasteful number, since it uses less digits than its factorization.

123011430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100391.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123011430 is about 11091.0517986348. The cubic root of 123011430 is about 497.3343876085.

Adding to 123011430 its reverse (34110321), we get a palindrome (157121751).

It can be divided in two parts, 12301 and 1430, that added together give a palindrome (13731).

The spelling of 123011430 in words is "one hundred twenty-three million, eleven thousand, four hundred thirty".