45142340021 has 8 divisors (see below), whose sum is σ = 45890110464. Its totient is φ = 44394819120.

The previous prime is 45142340017. The next prime is 45142340077. The reversal of 45142340021 is 12004324154.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45142340021 - 2² = 45142340017 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 (45142340011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321836 + ... + 440298.

It is an arithmetic number, because the mean of its divisors is an integer number (5736263808).

Almost surely, 2^45142340021 is an apocalyptic number.

It is an amenable number.

45142340021 is a deficient number, since it is larger than the sum of its proper divisors (747770443).

45142340021 is a wasteful number, since it uses less digits than its factorization.

45142340021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124771.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 45142340021 its reverse (12004324154), we get a palindrome (57146664175).

The spelling of 45142340021 in words is "forty-five billion, one hundred forty-two million, three hundred forty thousand, twenty-one".