121750642734 has 32 divisors (see below), whose sum is σ = 278333016576. Its totient is φ = 34780168800.

The previous prime is 121750642703. The next prime is 121750642777. The reversal of 121750642734 is 437246057121.

It is a super-2 number, since 2×121750642734² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22704 + ... + 493980.

It is an arithmetic number, because the mean of its divisors is an integer number (8697906768).

Almost surely, 2^121750642734 is an apocalyptic number.

121750642734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121750642734 is an abundant number, since it is smaller than the sum of its proper divisors (156582373842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121750642734 is a wasteful number, since it uses less digits than its factorization.

121750642734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477440.

The product of its (nonzero) digits is 282240, while the sum is 42.

Adding to 121750642734 its reverse (437246057121), we get a palindrome (558996699855).

The spelling of 121750642734 in words is "one hundred twenty-one billion, seven hundred fifty million, six hundred forty-two thousand, seven hundred thirty-four".