145361121 has 4 divisors (see below), whose sum is σ = 193814832. Its totient is φ = 96907412.

The previous prime is 145361087. The next prime is 145361129. The reversal of 145361121 is 121163541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121163541 = 3 ⋅40387847.

It is a cyclic number.

It is not a de Polignac number, because 145361121 - 2²⁶ = 78252257 is a prime.

It is a super-2 number, since 2×145361121² = 42259710996753282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145361091 and 145361100.

It is not an unprimeable number, because it can be changed into a prime (145361129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24226851 + ... + 24226856.

It is an arithmetic number, because the mean of its divisors is an integer number (48453708).

Almost surely, 2^145361121 is an apocalyptic number.

It is an amenable number.

145361121 is a deficient number, since it is larger than the sum of its proper divisors (48453711).

145361121 is an equidigital number, since it uses as much as digits as its factorization.

145361121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48453710.

The product of its digits is 720, while the sum is 24.

The square root of 145361121 is about 12056.5799877080. The cubic root of 145361121 is about 525.7945592290.

The spelling of 145361121 in words is "one hundred forty-five million, three hundred sixty-one thousand, one hundred twenty-one".