1242941629 has 4 divisors (see below), whose sum is σ = 1276534684. Its totient is φ = 1209348576.

The previous prime is 1242941611. The next prime is 1242941633. The reversal of 1242941629 is 9261492421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1174432900 + 68508729 = 34270^2 + 8277^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242941629 - 2⁷ = 1242941501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242941591 and 1242941600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242941659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16796472 + ... + 16796545.

It is an arithmetic number, because the mean of its divisors is an integer number (319133671).

Almost surely, 2^1242941629 is an apocalyptic number.

It is an amenable number.

1242941629 is a deficient number, since it is larger than the sum of its proper divisors (33593055).

1242941629 is an equidigital number, since it uses as much as digits as its factorization.

1242941629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33593054.

The product of its digits is 62208, while the sum is 40.

The square root of 1242941629 is about 35255.3773061642. The cubic root of 1242941629 is about 1075.1859433898.

The spelling of 1242941629 in words is "one billion, two hundred forty-two million, nine hundred forty-one thousand, six hundred twenty-nine".