147000021 has 16 divisors (see below), whose sum is σ = 225143424. Its totient is φ = 83571264.

The previous prime is 147000013. The next prime is 147000023. The reversal of 147000021 is 120000741.

It is not a de Polignac number, because 147000021 - 2³ = 147000013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147000023) 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, 13630 + ... + 21903.

It is an arithmetic number, because the mean of its divisors is an integer number (14071464).

Almost surely, 2^147000021 is an apocalyptic number.

It is an amenable number.

147000021 is a deficient number, since it is larger than the sum of its proper divisors (78143403).

147000021 is a wasteful number, since it uses less digits than its factorization.

147000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35740.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 147000021 is about 12124.3565190075. The cubic root of 147000021 is about 527.7632339220.

Adding to 147000021 its reverse (120000741), we get a palindrome (267000762).

The spelling of 147000021 in words is "one hundred forty-seven million, twenty-one", and thus it is an aban number.