1234142420 has 36 divisors (see below), whose sum is σ = 3014836020. Its totient is φ = 423134208.

The previous prime is 1234142419. The next prime is 1234142431. The reversal of 1234142420 is 242414321.

It can be written as a sum of positive squares in 2 ways, for example, as 181010116 + 1053132304 = 13454^2 + 32452^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 628685 + ... + 630644.

It is an arithmetic number, because the mean of its divisors is an integer number (83745445).

Almost surely, 2^1234142420 is an apocalyptic number.

1234142420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1234142420 is an abundant number, since it is smaller than the sum of its proper divisors (1780693600).

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

1234142420 is a wasteful number, since it uses less digits than its factorization.

1234142420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259352 (or 1259343 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1234142420 is about 35130.3632204394. The cubic root of 1234142420 is about 1072.6427294501.

Adding to 1234142420 its reverse (242414321), we get a palindrome (1476556741).

The spelling of 1234142420 in words is "one billion, two hundred thirty-four million, one hundred forty-two thousand, four hundred twenty".