1242820707 has 16 divisors (see below), whose sum is σ = 1685046528. Its totient is φ = 814635360.

The previous prime is 1242820703. The next prime is 1242820739. The reversal of 1242820707 is 7070282421.

It is not a de Polignac number, because 1242820707 - 2² = 1242820703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242820703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71628 + ... + 87270.

It is an arithmetic number, because the mean of its divisors is an integer number (105315408).

Almost surely, 2^1242820707 is an apocalyptic number.

1242820707 is a deficient number, since it is larger than the sum of its proper divisors (442225821).

1242820707 is a wasteful number, since it uses less digits than its factorization.

1242820707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16090.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 1242820707 is about 35253.6623203888. The cubic root of 1242820707 is about 1075.1510750720.

The spelling of 1242820707 in words is "one billion, two hundred forty-two million, eight hundred twenty thousand, seven hundred seven".