45102152421 has 12 divisors (see below), whose sum is σ = 65277078048. Its totient is φ = 30008321064.

The previous prime is 45102152419. The next prime is 45102152483. The reversal of 45102152421 is 12425120154.

It is a happy number.

It is not a de Polignac number, because 45102152421 - 2¹ = 45102152419 is a prime.

It is a super-4 number, since 4×45102152421⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45102152021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4976935 + ... + 4985988.

It is an arithmetic number, because the mean of its divisors is an integer number (5439756504).

Almost surely, 2^45102152421 is an apocalyptic number.

It is an amenable number.

45102152421 is a deficient number, since it is larger than the sum of its proper divisors (20174925627).

45102152421 is a wasteful number, since it uses less digits than its factorization.

45102152421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9963432 (or 9963429 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 45102152421 its reverse (12425120154), we get a palindrome (57527272575).

The spelling of 45102152421 in words is "forty-five billion, one hundred two million, one hundred fifty-two thousand, four hundred twenty-one".