102649742 has 32 divisors (see below), whose sum is σ = 180203520. Its totient is φ = 43428960.

The previous prime is 102649727. The next prime is 102649747. The reversal of 102649742 is 247946201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102649747) 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, 11963 + ... + 18665.

It is an arithmetic number, because the mean of its divisors is an integer number (5631360).

Almost surely, 2^102649742 is an apocalyptic number.

102649742 is a deficient number, since it is larger than the sum of its proper divisors (77553778).

102649742 is a wasteful number, since it uses less digits than its factorization.

102649742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6768.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 102649742 is about 10131.6208969740. The cubic root of 102649742 is about 468.2228678929. Note that the first 3 decimals are identical.

The spelling of 102649742 in words is "one hundred two million, six hundred forty-nine thousand, seven hundred forty-two".