145121132 has 24 divisors (see below), whose sum is σ = 274038576. Its totient is φ = 66846528.

The previous prime is 145121113. The next prime is 145121147. The reversal of 145121132 is 231121541.

It is a super-2 number, since 2×145121132² = 42120285905922848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26798 + ... + 31754.

It is an arithmetic number, because the mean of its divisors is an integer number (11418274).

Almost surely, 2^145121132 is an apocalyptic number.

It is an amenable number.

145121132 is a deficient number, since it is larger than the sum of its proper divisors (128917444).

145121132 is a wasteful number, since it uses less digits than its factorization.

145121132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5537 (or 5535 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 145121132 is about 12046.6232613127. The cubic root of 145121132 is about 525.5050402332.

Adding to 145121132 its reverse (231121541), we get a palindrome (376242673).

The spelling of 145121132 in words is "one hundred forty-five million, one hundred twenty-one thousand, one hundred thirty-two".