102145254 has 64 divisors (see below), whose sum is σ = 226713600. Its totient is φ = 30536352.

The previous prime is 102145249. The next prime is 102145259. The reversal of 102145254 is 452541201.

It is an interprime number because it is at equal distance from previous prime (102145249) and next prime (102145259).

It is a super-4 number, since 4×102145254⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102145259) 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, 427267 + ... + 427505.

It is an arithmetic number, because the mean of its divisors is an integer number (3542400).

Almost surely, 2^102145254 is an apocalyptic number.

102145254 is an abundant number, since it is smaller than the sum of its proper divisors (124568346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102145254 is a wasteful number, since it uses less digits than its factorization.

102145254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 102145254 is about 10106.6935245905. The cubic root of 102145254 is about 467.4545566703.

Adding to 102145254 its reverse (452541201), we get a palindrome (554686455).

The spelling of 102145254 in words is "one hundred two million, one hundred forty-five thousand, two hundred fifty-four".