102042254 has 16 divisors (see below), whose sum is σ = 155076768. Its totient is φ = 50353152.

The previous prime is 102042253. The next prime is 102042287. The reversal of 102042254 is 452240201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102042251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114599 + ... + 115485.

It is an arithmetic number, because the mean of its divisors is an integer number (9692298).

Almost surely, 2^102042254 is an apocalyptic number.

102042254 is a deficient number, since it is larger than the sum of its proper divisors (53034514).

102042254 is an equidigital number, since it uses as much as digits as its factorization.

102042254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 102042254 is about 10101.5966064776. The cubic root of 102042254 is about 467.2973817646.

Adding to 102042254 its reverse (452240201), we get a palindrome (554282455).

The spelling of 102042254 in words is "one hundred two million, forty-two thousand, two hundred fifty-four".