121145458 has 16 divisors (see below), whose sum is σ = 214377984. Its totient is φ = 50244480.

The previous prime is 121145449. The next prime is 121145459. The reversal of 121145458 is 854541121.

It is a super-3 number, since 3×121145458³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (121145459) 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, 139135 + ... + 140002.

It is an arithmetic number, because the mean of its divisors is an integer number (13398624).

Almost surely, 2^121145458 is an apocalyptic number.

121145458 is a deficient number, since it is larger than the sum of its proper divisors (93232526).

121145458 is a wasteful number, since it uses less digits than its factorization.

121145458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279177.

The product of its digits is 6400, while the sum is 31.

The square root of 121145458 is about 11006.6097414236. The cubic root of 121145458 is about 494.8068599968.

Adding to 121145458 its reverse (854541121), we get a palindrome (975686579).

The spelling of 121145458 in words is "one hundred twenty-one million, one hundred forty-five thousand, four hundred fifty-eight".