1243850042 has 16 divisors (see below), whose sum is σ = 1912028352. Its totient is φ = 606687840.

The previous prime is 1243850021. The next prime is 1243850059. The reversal of 1243850042 is 2400583421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1243849987 and 1243850014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31259 + ... + 58862.

It is an arithmetic number, because the mean of its divisors is an integer number (119501772).

Almost surely, 2^1243850042 is an apocalyptic number.

1243850042 is a deficient number, since it is larger than the sum of its proper divisors (668178310).

1243850042 is a wasteful number, since it uses less digits than its factorization.

1243850042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90293.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 1243850042 is about 35268.2582785144. The cubic root of 1243850042 is about 1075.4478154456.

The spelling of 1243850042 in words is "one billion, two hundred forty-three million, eight hundred fifty thousand, forty-two".