145741461121 has 3 divisors (see below), whose sum is σ = 145741842883. Its totient is φ = 145741079360.

The previous prime is 145741461113. The next prime is 145741461127. The reversal of 145741461121 is 121164147541.

It is a happy number.

The square root of 145741461121 is 381761.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 16458067521 + 129283393600 = 128289^2 + 359560^2 .

It is not a de Polignac number, because 145741461121 - 2³ = 145741461113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145741461127) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 190881 + ... + 572641.

Almost surely, 2^145741461121 is an apocalyptic number.

145741461121 is the 381761-st square number.

145741461121 is the 190881-st centered octagonal number.

It is an amenable number.

145741461121 is a deficient number, since it is larger than the sum of its proper divisors (381762).

145741461121 is an frugal number, since it uses more digits than its factorization.

145741461121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763522 (or 381761 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The spelling of 145741461121 in words is "one hundred forty-five billion, seven hundred forty-one million, four hundred sixty-one thousand, one hundred twenty-one".