10129942 has 4 divisors (see below), whose sum is σ = 15194916. Its totient is φ = 5064970.

The previous prime is 10129939. The next prime is 10129969. The reversal of 10129942 is 24992101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24992101 = 263 ⋅95027.

It is a self number, because there is not a number n which added to its sum of digits gives 10129942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2532484 + ... + 2532487.

It is an arithmetic number, because the mean of its divisors is an integer number (3798729).

Almost surely, 2^10129942 is an apocalyptic number.

10129942 is a deficient number, since it is larger than the sum of its proper divisors (5064974).

10129942 is an equidigital number, since it uses as much as digits as its factorization.

10129942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5064973.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 10129942 is about 3182.7569809836. The cubic root of 10129942 is about 216.3726278327.

The spelling of 10129942 in words is "ten million, one hundred twenty-nine thousand, nine hundred forty-two".