145246150126421 has 4 divisors (see below), whose sum is σ = 146684230820844. Its totient is φ = 143808069432000.

The previous prime is 145246150126403. The next prime is 145246150126433. The reversal of 145246150126421 is 124621051642541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135781082520196 + 9465067606225 = 11652514^2 + 3076535^2 .

It is a cyclic number.

It is not a de Polignac number, because 145246150126421 - 2¹⁴ = 145246150110037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145246150122421) 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, 719040347060 + ... + 719040347261.

It is an arithmetic number, because the mean of its divisors is an integer number (36671057705211).

Almost surely, 2^{145246150126421} is an apocalyptic number.

It is an amenable number.

145246150126421 is a deficient number, since it is larger than the sum of its proper divisors (1438080694423).

145246150126421 is a wasteful number, since it uses less digits than its factorization.

145246150126421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438080694422.

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 145246150126421 in words is "one hundred forty-five trillion, two hundred forty-six billion, one hundred fifty million, one hundred twenty-six thousand, four hundred twenty-one".