1242642330 has 64 divisors (see below), whose sum is σ = 3318174720. Its totient is φ = 330925248.

The previous prime is 1242642329. The next prime is 1242642341. The reversal of 1242642330 is 332462421.

1242642330 is a `hidden beast` number, since 1 + 2 + 426 + 4 + 233 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1242642294 and 1242642303.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230344 + ... + 235676.

It is an arithmetic number, because the mean of its divisors is an integer number (51846480).

Almost surely, 2^1242642330 is an apocalyptic number.

1242642330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242642330 is an abundant number, since it is smaller than the sum of its proper divisors (2075532390).

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

1242642330 is a wasteful number, since it uses less digits than its factorization.

1242642330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6212 (or 6206 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 1242642330 is about 35251.1323222390. The cubic root of 1242642330 is about 1075.0996352576.

It can be divided in two parts, 12426 and 42330, that added together give a square (54756 = 234²).

The spelling of 1242642330 in words is "one billion, two hundred forty-two million, six hundred forty-two thousand, three hundred thirty".