103042390 has 24 divisors (see below), whose sum is σ = 203873040. Its totient is φ = 37469520.

The previous prime is 103042367. The next prime is 103042393. The reversal of 103042390 is 93240301.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103042393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41370 + ... + 43789.

It is an arithmetic number, because the mean of its divisors is an integer number (8494710).

Almost surely, 2^103042390 is an apocalyptic number.

103042390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

103042390 is a deficient number, since it is larger than the sum of its proper divisors (100830650).

103042390 is a wasteful number, since it uses less digits than its factorization.

103042390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85188 (or 85177 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 103042390 is about 10150.9797556689. The cubic root of 103042390 is about 468.8191118246.

Adding to 103042390 its reverse (93240301), we get a palindrome (196282691).

Subtracting from 103042390 its reverse (93240301), we obtain a palindrome (9802089).

It can be divided in two parts, 10 and 3042390, that multiplied together give a triangular number (30423900 = T₇₈₀₀).

The spelling of 103042390 in words is "one hundred three million, forty-two thousand, three hundred ninety".