121951742 has 8 divisors (see below), whose sum is σ = 199557432. Its totient is φ = 55432600.

The previous prime is 121951729. The next prime is 121951769. The reversal of 121951742 is 247159121.

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

It is a junction number, because it is equal to n+sod(n) for n = 121951699 and 121951708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2771609 + ... + 2771652.

It is an arithmetic number, because the mean of its divisors is an integer number (24944679).

Almost surely, 2^121951742 is an apocalyptic number.

121951742 is a deficient number, since it is larger than the sum of its proper divisors (77605690).

121951742 is a wasteful number, since it uses less digits than its factorization.

121951742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543274.

The product of its digits is 5040, while the sum is 32.

The square root of 121951742 is about 11043.1762641008. The cubic root of 121951742 is about 495.9021632167.

The spelling of 121951742 in words is "one hundred twenty-one million, nine hundred fifty-one thousand, seven hundred forty-two".