1042121153 has 4 divisors (see below), whose sum is σ = 1055312640. Its totient is φ = 1028929668.

The previous prime is 1042121117. The next prime is 1042121167. The reversal of 1042121153 is 3511212401.

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: 3511212401 = 191 ⋅18383311.

It is a cyclic number.

It is not a de Polignac number, because 1042121153 - 2⁸ = 1042120897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042121183) 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, 6595625 + ... + 6595782.

It is an arithmetic number, because the mean of its divisors is an integer number (263828160).

Almost surely, 2^1042121153 is an apocalyptic number.

It is an amenable number.

1042121153 is a deficient number, since it is larger than the sum of its proper divisors (13191487).

1042121153 is an equidigital number, since it uses as much as digits as its factorization.

1042121153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13191486.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1042121153 is about 32281.9013225677. The cubic root of 1042121153 is about 1013.8477393026.

Adding to 1042121153 its reverse (3511212401), we get a palindrome (4553333554).

The spelling of 1042121153 in words is "one billion, forty-two million, one hundred twenty-one thousand, one hundred fifty-three".