1040154421 has 4 divisors (see below), whose sum is σ = 1040274144. Its totient is φ = 1040034700.

The previous prime is 1040154419. The next prime is 1040154433. The reversal of 1040154421 is 1244510401.

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.

It is a cyclic number.

It is not a de Polignac number, because 1040154421 - 2¹ = 1040154419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1040154392 and 1040154401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040154721) 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, 45715 + ... + 64576.

It is an arithmetic number, because the mean of its divisors is an integer number (260068536).

Almost surely, 2^1040154421 is an apocalyptic number.

It is an amenable number.

1040154421 is a deficient number, since it is larger than the sum of its proper divisors (119723).

1040154421 is an equidigital number, since it uses as much as digits as its factorization.

1040154421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119722.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1040154421 is about 32251.4251002960. The cubic root of 1040154421 is about 1013.2095465591.

Adding to 1040154421 its reverse (1244510401), we get a palindrome (2284664822).

The spelling of 1040154421 in words is "one billion, forty million, one hundred fifty-four thousand, four hundred twenty-one".