1209572434 has 32 divisors (see below), whose sum is σ = 2089376640. Its totient is φ = 514449792.

The previous prime is 1209572407. The next prime is 1209572449. The reversal of 1209572434 is 4342759021.

It is a junction number, because it is equal to n+sod(n) for n = 1209572393 and 1209572402.

It is an unprimeable number.

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, 1705672 + ... + 1706380.

It is an arithmetic number, because the mean of its divisors is an integer number (65293020).

Almost surely, 2^1209572434 is an apocalyptic number.

1209572434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1209572434 is a deficient number, since it is larger than the sum of its proper divisors (879804206).

1209572434 is a wasteful number, since it uses less digits than its factorization.

1209572434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1209572434 is about 34778.9078896966. The cubic root of 1209572434 is about 1065.4767081270.

The spelling of 1209572434 in words is "one billion, two hundred nine million, five hundred seventy-two thousand, four hundred thirty-four".