1290557134 has 4 divisors (see below), whose sum is σ = 1935835704. Its totient is φ = 645278566.

The previous prime is 1290557119. The next prime is 1290557141. The reversal of 1290557134 is 4317550921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4317550921 = 12713 ⋅339617.

It is a super-2 number, since 2×1290557134² = 3331075432236587912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1290557093 and 1290557102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322639282 + ... + 322639285.

It is an arithmetic number, because the mean of its divisors is an integer number (483958926).

Almost surely, 2^1290557134 is an apocalyptic number.

1290557134 is a deficient number, since it is larger than the sum of its proper divisors (645278570).

1290557134 is an equidigital number, since it uses as much as digits as its factorization.

1290557134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645278569.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 1290557134 is about 35924.3251015242. The cubic root of 1290557134 is about 1088.7439263907.

The spelling of 1290557134 in words is "one billion, two hundred ninety million, five hundred fifty-seven thousand, one hundred thirty-four".