1242783701854 has 32 divisors (see below), whose sum is σ = 1931119292160. Its totient is φ = 599220460800.

The previous prime is 1242783701851. The next prime is 1242783701857. The reversal of 1242783701854 is 4581073872421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1242783701851) and next prime (1242783701857).

It is a super-2 number, since 2×1242783701854² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242783701851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67310184 + ... + 67328644.

It is an arithmetic number, because the mean of its divisors is an integer number (60347477880).

Almost surely, 2^{1242783701854} is an apocalyptic number.

1242783701854 is a deficient number, since it is larger than the sum of its proper divisors (688335590306).

1242783701854 is a wasteful number, since it uses less digits than its factorization.

1242783701854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22276.

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 1242783701854 in words is "one trillion, two hundred forty-two billion, seven hundred eighty-three million, seven hundred one thousand, eight hundred fifty-four".