1154122402 has 4 divisors (see below), whose sum is σ = 1731183606. Its totient is φ = 577061200.

The previous prime is 1154122391. The next prime is 1154122429. The reversal of 1154122402 is 2042214511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2042214511 = 313 ⋅6524647.

It can be written as a sum of positive squares in only one way, i.e., 1153892961 + 229441 = 33969^2 + 479^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 288530599 + ... + 288530602.

Almost surely, 2^1154122402 is an apocalyptic number.

1154122402 is a deficient number, since it is larger than the sum of its proper divisors (577061204).

1154122402 is an equidigital number, since it uses as much as digits as its factorization.

1154122402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577061203.

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

The square root of 1154122402 is about 33972.3770437101. The cubic root of 1154122402 is about 1048.9399436053.

Adding to 1154122402 its reverse (2042214511), we get a palindrome (3196336913).

The spelling of 1154122402 in words is "one billion, one hundred fifty-four million, one hundred twenty-two thousand, four hundred two".