1211442134 has 16 divisors (see below), whose sum is σ = 2198920608. Its totient is φ = 488648832.

The previous prime is 1211442097. The next prime is 1211442161. The reversal of 1211442134 is 4312441121.

It is a super-3 number, since 3×1211442134³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2544809 + ... + 2545284.

It is an arithmetic number, because the mean of its divisors is an integer number (137432538).

Almost surely, 2^1211442134 is an apocalyptic number.

1211442134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1211442134 is a deficient number, since it is larger than the sum of its proper divisors (987478474).

1211442134 is a wasteful number, since it uses less digits than its factorization.

1211442134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5090119.

The product of its digits is 768, while the sum is 23.

The square root of 1211442134 is about 34805.7773077976. Note that the first 3 decimals coincide. The cubic root of 1211442134 is about 1066.0254133783.

Adding to 1211442134 its reverse (4312441121), we get a palindrome (5523883255).

The spelling of 1211442134 in words is "one billion, two hundred eleven million, four hundred forty-two thousand, one hundred thirty-four".