1242020034 has 32 divisors (see below), whose sum is σ = 2922402240. Its totient is φ = 389653056.

The previous prime is 1242020023. The next prime is 1242020057. The reversal of 1242020034 is 4300202421.

1242020034 is a `hidden beast` number, since 12 + 420 + 200 + 34 = 666.

It is a super-2 number, since 2×1242020034² = 3085227529714722312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1242019989 and 1242020016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675564 + ... + 677399.

It is an arithmetic number, because the mean of its divisors is an integer number (91325070).

Almost surely, 2^1242020034 is an apocalyptic number.

1242020034 is an abundant number, since it is smaller than the sum of its proper divisors (1680382206).

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

1242020034 is a wasteful number, since it uses less digits than its factorization.

1242020034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352991 (or 1352985 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1242020034 is about 35242.3046068216. The cubic root of 1242020034 is about 1074.9201408857.

Adding to 1242020034 its reverse (4300202421), we get a palindrome (5542222455).

The spelling of 1242020034 in words is "one billion, two hundred forty-two million, twenty thousand, thirty-four".