1242542141 has 8 divisors (see below), whose sum is σ = 1251936000. Its totient is φ = 1233162640.

The previous prime is 1242542003. The next prime is 1242542143. The reversal of 1242542141 is 1412452421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242542141 is a prime.

It is a super-3 number, since 3×1242542141³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242542141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242542143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222380 + ... + 227898.

It is an arithmetic number, because the mean of its divisors is an integer number (156492000).

Almost surely, 2^1242542141 is an apocalyptic number.

It is an amenable number.

1242542141 is a deficient number, since it is larger than the sum of its proper divisors (9393859).

1242542141 is a wasteful number, since it uses less digits than its factorization.

1242542141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7179.

The product of its digits is 2560, while the sum is 26.

The square root of 1242542141 is about 35249.7112186753. The cubic root of 1242542141 is about 1075.0707409009.

Adding to 1242542141 its reverse (1412452421), we get a palindrome (2654994562).

The spelling of 1242542141 in words is "one billion, two hundred forty-two million, five hundred forty-two thousand, one hundred forty-one".