1078999142 has 16 divisors (see below), whose sum is σ = 1754107152. Its totient is φ = 494825760.

The previous prime is 1078999123. The next prime is 1078999147. The reversal of 1078999142 is 2419998701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078999147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128084 + ... + 136247.

It is an arithmetic number, because the mean of its divisors is an integer number (109631697).

Almost surely, 2^1078999142 is an apocalyptic number.

1078999142 is a deficient number, since it is larger than the sum of its proper divisors (675108010).

1078999142 is a wasteful number, since it uses less digits than its factorization.

1078999142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264503.

The product of its (nonzero) digits is 326592, while the sum is 50.

The square root of 1078999142 is about 32848.1223512091. The cubic root of 1078999142 is about 1025.6685361440.

The spelling of 1078999142 in words is "one billion, seventy-eight million, nine hundred ninety-nine thousand, one hundred forty-two".