142240145481 has 24 divisors (see below), whose sum is σ = 240536185344. Its totient is φ = 79297640640.

The previous prime is 142240145449. The next prime is 142240145483. The reversal of 142240145481 is 184541042241.

142240145481 is a `hidden beast` number, since 14 + 2 + 24 + 0 + 145 + 481 = 666.

It is not a de Polignac number, because 142240145481 - 2⁵ = 142240145449 is a prime.

It is a super-2 number, since 2×142240145481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142240145483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27531321 + ... + 27536486.

It is an arithmetic number, because the mean of its divisors is an integer number (10022341056).

Almost surely, 2^142240145481 is an apocalyptic number.

It is an amenable number.

142240145481 is a deficient number, since it is larger than the sum of its proper divisors (98296039863).

142240145481 is a wasteful number, since it uses less digits than its factorization.

142240145481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55067861 (or 55067858 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The spelling of 142240145481 in words is "one hundred forty-two billion, two hundred forty million, one hundred forty-five thousand, four hundred eighty-one".