1142401511 has 4 divisors (see below), whose sum is σ = 1168969032. Its totient is φ = 1115833992.

The previous prime is 1142401501. The next prime is 1142401517. The reversal of 1142401511 is 1151042411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1151042411 = 311 ⋅3701101.

It is a cyclic number.

It is not a de Polignac number, because 1142401511 - 2²² = 1138207207 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 (1142401517) 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, 13283696 + ... + 13283781.

It is an arithmetic number, because the mean of its divisors is an integer number (292242258).

Almost surely, 2^1142401511 is an apocalyptic number.

1142401511 is a deficient number, since it is larger than the sum of its proper divisors (26567521).

1142401511 is an equidigital number, since it uses as much as digits as its factorization.

1142401511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26567520.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 1142401511 is about 33799.4306312991. The cubic root of 1142401511 is about 1045.3769573263.

Adding to 1142401511 its reverse (1151042411), we get a palindrome (2293443922).

The spelling of 1142401511 in words is "one billion, one hundred forty-two million, four hundred one thousand, five hundred eleven".