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1142157 = 32316553
BaseRepresentation
bin100010110110110001101
32011000202010
410112312031
5243022112
640251433
712464622
oct4266615
92130663
101142157
11710135
12470b79
1330cb43
1421a349
1517863c
hex116d8d

1142157 has 8 divisors (see below), whose sum is σ = 1589184. Its totient is φ = 728288.

The previous prime is 1142131. The next prime is 1142159. The reversal of 1142157 is 7512411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1142157 - 28 = 1141901 is a prime.

It is a super-2 number, since 2×11421572 = 2609045225298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142159) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8208 + ... + 8345.

It is an arithmetic number, because the mean of its divisors is an integer number (198648).

21142157 is an apocalyptic number.

It is an amenable number.

1142157 is a deficient number, since it is larger than the sum of its proper divisors (447027).

1142157 is a wasteful number, since it uses less digits than its factorization.

1142157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16579.

The product of its digits is 280, while the sum is 21.

The square root of 1142157 is about 1068.7174556448. The cubic root of 1142157 is about 104.5302370473.

Adding to 1142157 its reverse (7512411), we get a palindrome (8654568).

The spelling of 1142157 in words is "one million, one hundred forty-two thousand, one hundred fifty-seven".

Divisors: 1 3 23 69 16553 49659 380719 1142157