123021430 has 16 divisors (see below), whose sum is σ = 253072800. Its totient is φ = 42178752.

The previous prime is 123021413. The next prime is 123021473. The reversal of 123021430 is 34120321.

It is a happy 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, 878655 + ... + 878794.

It is an arithmetic number, because the mean of its divisors is an integer number (15817050).

Almost surely, 2^123021430 is an apocalyptic number.

123021430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123021430 is an abundant number, since it is smaller than the sum of its proper divisors (130051370).

123021430 is a wasteful number, since it uses less digits than its factorization.

123021430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757463.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 123021430 is about 11091.5026033446. The cubic root of 123021430 is about 497.3478638876.

Adding to 123021430 its reverse (34120321), we get a palindrome (157141751).

The spelling of 123021430 in words is "one hundred twenty-three million, twenty-one thousand, four hundred thirty".