1142642541 has 4 divisors (see below), whose sum is σ = 1523523392. Its totient is φ = 761761692.

The previous prime is 1142642533. The next prime is 1142642549. The reversal of 1142642541 is 1452462411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1452462411 = 3 ⋅484154137.

It is an interprime number because it is at equal distance from previous prime (1142642533) and next prime (1142642549).

It is not a de Polignac number, because 1142642541 - 2³ = 1142642533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142642499 and 1142642508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142642549) 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, 190440421 + ... + 190440426.

It is an arithmetic number, because the mean of its divisors is an integer number (380880848).

Almost surely, 2^1142642541 is an apocalyptic number.

It is an amenable number.

1142642541 is a deficient number, since it is larger than the sum of its proper divisors (380880851).

1142642541 is an equidigital number, since it uses as much as digits as its factorization.

1142642541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380880850.

The product of its digits is 7680, while the sum is 30.

The square root of 1142642541 is about 33802.9960358546. The cubic root of 1142642541 is about 1045.4504719028.

The spelling of 1142642541 in words is "one billion, one hundred forty-two million, six hundred forty-two thousand, five hundred forty-one".