145342140125521 has 16 divisors (see below), whose sum is σ = 146680263069120. Its totient is φ = 144007619970240.

The previous prime is 145342140125519. The next prime is 145342140125561. The reversal of 145342140125521 is 125521041243541.

It is a cyclic number.

It is not a de Polignac number, because 145342140125521 - 2¹ = 145342140125519 is a prime.

It is a super-2 number, since 2×145342140125521² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145342140125561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274200270 + ... + 274729816.

It is an arithmetic number, because the mean of its divisors is an integer number (9167516441820).

Almost surely, 2^{145342140125521} is an apocalyptic number.

It is an amenable number.

145342140125521 is a deficient number, since it is larger than the sum of its proper divisors (1338122943599).

145342140125521 is a wasteful number, since it uses less digits than its factorization.

145342140125521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532944.

The product of its (nonzero) digits is 192000, while the sum is 40.

The spelling of 145342140125521 in words is "one hundred forty-five trillion, three hundred forty-two billion, one hundred forty million, one hundred twenty-five thousand, five hundred twenty-one".