1401157 has 4 divisors (see below), whose sum is σ = 1483596. Its totient is φ = 1318720.

The previous prime is 1401151. The next prime is 1401167. The reversal of 1401157 is 7511041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7511041 = 23 ⋅326567.

It can be written as a sum of positive squares in 2 ways, for example, as 1252161 + 148996 = 1119^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401157 - 2¹¹ = 1399109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401151) 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, 41194 + ... + 41227.

It is an arithmetic number, because the mean of its divisors is an integer number (370899).

2^1401157 is an apocalyptic number.

1401157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1401157 is a deficient number, since it is larger than the sum of its proper divisors (82439).

1401157 is an equidigital number, since it uses as much as digits as its factorization.

1401157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82438.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 1401157 is about 1183.7047773833. The cubic root of 1401157 is about 111.8997029394.

Adding to 1401157 its reverse (7511041), we get a palindrome (8912198).

The spelling of 1401157 in words is "one million, four hundred one thousand, one hundred fifty-seven".