121543464 has 32 divisors (see below), whose sum is σ = 347267520. Its totient is φ = 34726656.

The previous prime is 121543463. The next prime is 121543507. The reversal of 121543464 is 464345121.

It is a super-2 number, since 2×121543464² = 29545627282238592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121543463) 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, 361569 + ... + 361904.

It is an arithmetic number, because the mean of its divisors is an integer number (10852110).

Almost surely, 2^121543464 is an apocalyptic number.

121543464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121543464 is an abundant number, since it is smaller than the sum of its proper divisors (225724056).

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

121543464 is a wasteful number, since it uses less digits than its factorization.

121543464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723489 (or 723485 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 121543464 is about 11024.6752333119. The cubic root of 121543464 is about 495.3481399499.

Adding to 121543464 its reverse (464345121), we get a palindrome (585888585).

The spelling of 121543464 in words is "one hundred twenty-one million, five hundred forty-three thousand, four hundred sixty-four".