1230142420 has 48 divisors (see below), whose sum is σ = 2784756240. Its totient is φ = 453758976.

The previous prime is 1230142399. The next prime is 1230142439. The reversal of 1230142420 is 242410321.

It can be written as a sum of positive squares in 8 ways, for example, as 18267076 + 1211875344 = 4274^2 + 34812^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386596 + ... + 389764.

It is an arithmetic number, because the mean of its divisors is an integer number (58015755).

Almost surely, 2^1230142420 is an apocalyptic number.

1230142420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230142420 is an abundant number, since it is smaller than the sum of its proper divisors (1554613820).

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

1230142420 is a wasteful number, since it uses less digits than its factorization.

1230142420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684 (or 4682 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1230142420 is about 35073.3862066382. The cubic root of 1230142420 is about 1071.4826216627.

Adding to 1230142420 its reverse (242410321), we get a palindrome (1472552741).

The spelling of 1230142420 in words is "one billion, two hundred thirty million, one hundred forty-two thousand, four hundred twenty".