1019142920 has 16 divisors (see below), whose sum is σ = 2293071660. Its totient is φ = 407657152.

The previous prime is 1019142899. The next prime is 1019142923. The reversal of 1019142920 is 292419101.

It can be written as a sum of positive squares in 2 ways, for example, as 1001216164 + 17926756 = 31642^2 + 4234^2 .

It is a super-2 number, since 2×1019142920² = 2077304582772252800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1019142923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12739247 + ... + 12739326.

Almost surely, 2^1019142920 is an apocalyptic number.

1019142920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1019142920 is an abundant number, since it is smaller than the sum of its proper divisors (1273928740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1019142920 is a wasteful number, since it uses less digits than its factorization.

1019142920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25478584 (or 25478580 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1019142920 is about 31924.0179175492. The cubic root of 1019142920 is about 1006.3406840845.

The spelling of 1019142920 in words is "one billion, nineteen million, one hundred forty-two thousand, nine hundred twenty".