1242055430 has 192 divisors, whose sum is σ = 3042344448. Its totient is φ = 360138240.

The previous prime is 1242055429. The next prime is 1242055457. The reversal of 1242055430 is 345502421.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242055430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5330594 + ... + 5330826.

It is an arithmetic number, because the mean of its divisors is an integer number (15845544).

Almost surely, 2^1242055430 is an apocalyptic number.

1242055430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242055430 is an abundant number, since it is smaller than the sum of its proper divisors (1800289018).

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

1242055430 is a wasteful number, since it uses less digits than its factorization.

1242055430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1242055430 is about 35242.8067837963. The cubic root of 1242055430 is about 1074.9303520768.

Adding to 1242055430 its reverse (345502421), we get a palindrome (1587557851).

The spelling of 1242055430 in words is "one billion, two hundred forty-two million, fifty-five thousand, four hundred thirty".