145634121 has 24 divisors (see below), whose sum is σ = 223258464. Its totient is φ = 91163520.

The previous prime is 145634119. The next prime is 145634123. The reversal of 145634121 is 121436541.

It is a happy number.

145634121 is a `hidden beast` number, since 1 + 4 + 5 + 634 + 1 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (145634119) and next prime (145634123).

It is not a de Polignac number, because 145634121 - 2¹ = 145634119 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (145634123) 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 in 23 ways as a sum of consecutive naturals, for example, 86530 + ... + 88196.

It is an arithmetic number, because the mean of its divisors is an integer number (9302436).

Almost surely, 2^145634121 is an apocalyptic number.

It is an amenable number.

145634121 is a deficient number, since it is larger than the sum of its proper divisors (77624343).

145634121 is a wasteful number, since it uses less digits than its factorization.

145634121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261 (or 2258 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 145634121 is about 12067.8962955438. The cubic root of 145634121 is about 526.1235150190.

The spelling of 145634121 in words is "one hundred forty-five million, six hundred thirty-four thousand, one hundred twenty-one".