1242069123 has 8 divisors (see below), whose sum is σ = 1656491200. Its totient is φ = 827846568.

The previous prime is 1242069119. The next prime is 1242069139. The reversal of 1242069123 is 3219602421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1242069123 - 2² = 1242069119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242069163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34693 + ... + 60726.

It is an arithmetic number, because the mean of its divisors is an integer number (207061400).

Almost surely, 2^1242069123 is an apocalyptic number.

1242069123 is a deficient number, since it is larger than the sum of its proper divisors (414422077).

1242069123 is an equidigital number, since it uses as much as digits as its factorization.

1242069123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99761.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1242069123 is about 35243.0010498539. The cubic root of 1242069123 is about 1074.9343022406.

The spelling of 1242069123 in words is "one billion, two hundred forty-two million, sixty-nine thousand, one hundred twenty-three".