102620042 has 16 divisors (see below), whose sum is σ = 178331712. Its totient is φ = 43377120.

The previous prime is 102619961. The next prime is 102620047. The reversal of 102620042 is 240026201.

It is a self number, because there is not a number n which added to its sum of digits gives 102620042.

It is not an unprimeable number, because it can be changed into a prime (102620047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49184 + ... + 51227.

It is an arithmetic number, because the mean of its divisors is an integer number (11145732).

Almost surely, 2^102620042 is an apocalyptic number.

102620042 is a deficient number, since it is larger than the sum of its proper divisors (75711670).

102620042 is a wasteful number, since it uses less digits than its factorization.

102620042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100493.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 102620042 is about 10130.1550827221. The cubic root of 102620042 is about 468.1777060305.

Adding to 102620042 its reverse (240026201), we get a palindrome (342646243).

The spelling of 102620042 in words is "one hundred two million, six hundred twenty thousand, forty-two".