102030145 has 32 divisors (see below), whose sum is σ = 145391616. Its totient is φ = 67262400.

The previous prime is 102030143. The next prime is 102030161. The reversal of 102030145 is 541030201.

It is not a de Polignac number, because 102030145 - 2¹ = 102030143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102030143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293862 + ... + 294208.

It is an arithmetic number, because the mean of its divisors is an integer number (4543488).

Almost surely, 2^102030145 is an apocalyptic number.

It is an amenable number.

102030145 is a deficient number, since it is larger than the sum of its proper divisors (43361471).

102030145 is a wasteful number, since it uses less digits than its factorization.

102030145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 102030145 is about 10100.9972279968. The cubic root of 102030145 is about 467.2788968475.

Adding to 102030145 its reverse (541030201), we get a palindrome (643060346).

The spelling of 102030145 in words is "one hundred two million, thirty thousand, one hundred forty-five".