140389942 has 32 divisors (see below), whose sum is σ = 263139840. Its totient is φ = 54574080.

The previous prime is 140389913. The next prime is 140389973. The reversal of 140389942 is 249983041.

140389942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 140389895 and 140389904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98934 + ... + 100342.

It is an arithmetic number, because the mean of its divisors is an integer number (8223120).

Almost surely, 2^140389942 is an apocalyptic number.

140389942 is a deficient number, since it is larger than the sum of its proper divisors (122749898).

140389942 is a wasteful number, since it uses less digits than its factorization.

140389942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2076.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 140389942 is about 11848.6261650877. The cubic root of 140389942 is about 519.7310517502.

The spelling of 140389942 in words is "one hundred forty million, three hundred eighty-nine thousand, nine hundred forty-two".