142778803 has 16 divisors (see below), whose sum is σ = 150336000. Its totient is φ = 135425920.

The previous prime is 142778759. The next prime is 142778827. The reversal of 142778803 is 308877241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142778803 is a prime.

It is a super-2 number, since 2×142778803² = 40771573172225618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142278803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747438 + ... + 747628.

It is an arithmetic number, because the mean of its divisors is an integer number (9396000).

Almost surely, 2^142778803 is an apocalyptic number.

142778803 is a deficient number, since it is larger than the sum of its proper divisors (7557197).

142778803 is a wasteful number, since it uses less digits than its factorization.

142778803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 142778803 is about 11949.0084525872. The cubic root of 142778803 is about 522.6623846068.

The spelling of 142778803 in words is "one hundred forty-two million, seven hundred seventy-eight thousand, eight hundred three".