121577734 has 4 divisors (see below), whose sum is σ = 182366604. Its totient is φ = 60788866.

The previous prime is 121577723. The next prime is 121577737. The reversal of 121577734 is 437775121.

It is a happy number.

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

It is a super-2 number, since 2×121577734² = 29562290809149512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121577693 and 121577702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121577737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30394432 + ... + 30394435.

It is an arithmetic number, because the mean of its divisors is an integer number (45591651).

Almost surely, 2^121577734 is an apocalyptic number.

121577734 is a deficient number, since it is larger than the sum of its proper divisors (60788870).

121577734 is an equidigital number, since it uses as much as digits as its factorization.

121577734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60788869.

The product of its digits is 41160, while the sum is 37.

The square root of 121577734 is about 11026.2293645652. The cubic root of 121577734 is about 495.3946911588.

It can be divided in two parts, 12157 and 7734, that added together give a palindrome (19891).

The spelling of 121577734 in words is "one hundred twenty-one million, five hundred seventy-seven thousand, seven hundred thirty-four".