1242088238951 has 4 divisors (see below), whose sum is σ = 1419529415952. Its totient is φ = 1064647061952.

The previous prime is 1242088238921. The next prime is 1242088239013. The reversal of 1242088238951 is 1598328802421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242088238951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242088238893 and 1242088238902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242088238921) 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, 88720588490 + ... + 88720588503.

It is an arithmetic number, because the mean of its divisors is an integer number (354882353988).

Almost surely, 2^{1242088238951} is an apocalyptic number.

1242088238951 is a deficient number, since it is larger than the sum of its proper divisors (177441177001).

1242088238951 is an equidigital number, since it uses as much as digits as its factorization.

1242088238951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177441177000.

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 1242088238951 in words is "one trillion, two hundred forty-two billion, eighty-eight million, two hundred thirty-eight thousand, nine hundred fifty-one".