102030451 has 2 divisors, whose sum is σ = 102030452. Its totient is φ = 102030450.

The previous prime is 102030449. The next prime is 102030473. The reversal of 102030451 is 154030201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102030451 - 2¹ = 102030449 is a prime.

Together with 102030449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102060451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51015225 + 51015226.

It is an arithmetic number, because the mean of its divisors is an integer number (51015226).

Almost surely, 2^102030451 is an apocalyptic number.

102030451 is a deficient number, since it is larger than the sum of its proper divisors (1).

102030451 is an equidigital number, since it uses as much as digits as its factorization.

102030451 is an evil number, because the sum of its binary digits is even.

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

The square root of 102030451 is about 10101.0123750048. The cubic root of 102030451 is about 467.2793639878.

Adding to 102030451 its reverse (154030201), we get a palindrome (256060652).

The spelling of 102030451 in words is "one hundred two million, thirty thousand, four hundred fifty-one".