1356160421 has 16 divisors (see below), whose sum is σ = 1714618368. Its totient is φ = 1041860400.

The previous prime is 1356160409. The next prime is 1356160457. The reversal of 1356160421 is 1240616531.

It is a happy number.

It is not a de Polignac number, because 1356160421 - 2²² = 1351966117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356160471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118565 + ... + 129498.

It is an arithmetic number, because the mean of its divisors is an integer number (107163648).

Almost surely, 2^1356160421 is an apocalyptic number.

1356160421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1356160421 is a deficient number, since it is larger than the sum of its proper divisors (358457947).

1356160421 is a wasteful number, since it uses less digits than its factorization.

1356160421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248152.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1356160421 is about 36826.0834328062. The cubic root of 1356160421 is about 1106.8880237258. Note that the first 3 decimals are identical.

Adding to 1356160421 its reverse (1240616531), we get a palindrome (2596776952).

The spelling of 1356160421 in words is "one billion, three hundred fifty-six million, one hundred sixty thousand, four hundred twenty-one".